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  • The Chuck Huckelberry Loop

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    For more information on Loop closures or events, like The Loop Facebook Page or view The Loop interactive map
    The Chuck Huckelberry Loop is a system of paved, shared-use paths and short segments of buffered bike lanes connecting the Cañada del Oro, Rillito, Santa Cruz, and Pantano River Parks with the Julian Wash and Harrison Road Greenway. Approximately 137 miles of paved pathways and bike lanes have already been completed with additional trails to come. 

    The Loop extends through unincorporated Pima County, Marana, Oro Valley, Tucson, and South Tucson. The connections are the result of Pima County's cooperative partnerships with these jurisdictions. The Loop connects parks, trailheads, bus and bike routes, workplaces, restaurants, schools, hotels and motels, shopping areas, and entertainment venues. Visitors and Pima County residents can enjoy the Loop on foot, bikes, skates, and horses.

    The Loop become “a real loop” in January 2018 when the County completed a connection on the south bank of the Rillito River Park between Glenn Street and Tanque Verde Road that connected the Rillito to the Pantano River Park. Connecting the Santa Cruz River Park with the Rillito, Pantano, Harrison Greenway and Julian Wash makes a complete circuit of 53.9 miles. 

    Complete List of Loop Guidelines

    Safety on the Loop.

    Notices and Closures

    View Notices and Closures

    Frequently Asked Loop Questions

    Pima County gets a number of questions regarding The Chuck Huckelberry Loop.  These questions and responses have been organized by category with the goal of addressing constituent concerns.

    General Questions

    What is The Loop?

    The Loop is a system of paved, shared-use paths and short segments of buffered bike lanes built on top of soil cement banks along metro waterways and connecting the Rillito, Santa Cruz, and Pantano River Parks with the Julian Wash and Harrison Road Greenways.

    Why was it built?

    After the significant flooding in the Phoenix area in the late 1970s, the state Legislature required counties to create special taxing districts to raise money for the construction of regional flood control improvements. Pima County began building soil-cement bank protection along the Rillito and Santa Cruz Rivers after the massive 1983 floods.

    How did that lead to the multi-use paths?

    Nearby residents were using the unpaved maintenance access paths on top of the banks to walk their dogs, go for a run or ride their bikes. The County started building river parks with improved paths on top of the banks, including pavement. By 1986, a paved section along the Rillito between Campbell Avenue and Oracle Road was completed. This river park became hugely popular with hundreds of people using it every day. 

    How long is the Loop?

    Many of the rivers have paths on both banks. Thus, when both banks plus connecting paths are included The Loop totals about 137 miles.

    When did the Loop become a real loop?

    In January 2018, the County completed a connection on the south bank of the Rillito River Park between Glenn Street and Tanque Verde Road that connected the Rillito to the Pantano River Park.

    What is the distance of that main loop?

    Connecting the Santa Cruz River Park with the Rillito, Pantano, Harrison Greenway and Julian Wash as a complete circle is 53.9 miles.

    How do I get on the Loop?

    There are dozens of places to access the Loop. To find the one closest to you, visit the Loop website pima.gov/theloop and click on the “Maps” tab. There you will find links to a Loop map in PDF form as well as an interactive map. The site also lists locations where you can pick up maps.

    Where can I find a restroom on the Loop?

    As of March 2018, the Loop had 15 restrooms found on the path and 20+ adjacent parks with facilities.  You can use the Loop Interactive Map to find a restroom facility in the area of use.  You also can check the printed Loop map by looking for the icons.

    Does the County rent bicycles to people wanting to bike along the Loop?

    No, but users can find plenty of bike shops that are located near the Loop through a quick online search. Many rent bikes on an hourly or daily basis. In addition, the Tugo Bike Share Program offers 330 bikes at 36 stations around town, several of which are located within a few miles of the Loop.
    Given the presence of these bike rental/sharing options in the area, the need appears to have been met. In addition, the County lacks the resources at this time to manage a bike shop and maintain a rental fleet.

    User etiquette and guidelines

    How do I know which way to go on the Loop?

    As with vehicles, you should stay on the right and pass on the left. Cyclists should announce their intent to pass by calling out “passing” and ringing a bell if they have one.

    Why do you have cyclists and pedestrians both go in the same direction?

    National guidance by the Federal Highway Administration indicates that pedestrians should walk on the right in the same direction of bicycle traffic when using off-street, shared-use pathways. In addition, other pathways within the region such as the Santa Cruz path, the Old Spanish Trail path, and the David Bell path around Reid Park have provided guidance since the 1980s for pedestrians to walk on the right in the same direction of bicycle traffic.

    I’m a pedestrian. It appears some cyclists ride much too fast on the Loop. What can be done about this?

    Most users abide by the Loop guidelines found on the Loop website. These signs are strategically being placed at a majority of our heavily-accessed entry points to promote courtesy guidance and encourage better behavior on trails. As a walker, you may be interested using the soft paths that run parallel to our asphalt trail.  You may find these locations using the Pima County Loop Interactive Map and search in the Legend to find River Park Trails / “Soft”. These paths are more conducive to pedestrian use and dog walking. 

    Please note, though, that if you feel your safety is threatened, call 911 and report it.  Law Enforcement has assured us that this is the appropriate thing to do even though some of us would not typically classify these things as an “emergencies” warranting such a report.  Although this type of report may not yield any type of citation, it will underscore with Law Enforcement that our citizens feel their safety is at risk and that additional patrols may be appropriate to mitigate potential hazards.

    Second, please report the incident using the Loop Feedback Form with as much detail as possible so we can record the nature of the offense and where/when it occurs. This information allows us to determine if patterns exist and, if they do, we can take certain actions. Those actions include directing our limited patrol and enforcement resources (via the Pima County Sheriff’s Office) into specific locations at specific dates or times, increasing educational or warning signage in select locations, or in some cases looking into developing capital improvements (path widening, traffic calming measures) into those areas if funds become available. Additionally, we do ask people to take notice and report any identifying characteristics about the offending entity or entities to us. This could include taking and sending a photo.  Sometimes a group of similarly clad individuals may have identifying markings on their outfits that can be useful to us in order to track down the offending entity allowing us to target our educational efforts in a particular direction.

    Third, every Loop user needs to be aware that there will always be people who will not comply with our guidelines (as much as we try to inform them) and therefore be watchful and aware of their surroundings and be prepared for the unexpected. That is the tough reality of using a multiuse pathway but is critically important for every user’s personal safety.

    What do I do if I’m on my bike and encounter a horse?

    Slow down and ask equestrians if it’s safe to pass. Don’t ring your bell – it spooks horses.

    Can I get on the Loop whenever I want?

    The Loop is open from dawn to dusk. Night time use is prohibited.

    Can I walk my dog on the Loop? Does he have to be on a leash?

    Absolutely to both questions! It’s extremely dangerous, particularly for cyclists, if an unleashed dog darts out in front of them. Pets must be kept under control, not cross the center line, and on leashes less than 6-feet length at all times. Please be sure to bring a bag to clean up your pet’s waste.

    What do I do if I see a Loop user who isn’t following the guidelines?

    The Loop is a shared-use path, with emphasis on the word “shared.” Take a walk or bike ride along the Loop and you’ll likely encounter fellow pedestrians and cyclists as well as roller-bladers, joggers, dog walkers, parents pushing strollers and the occasional equestrian. 

    The County has installed numerous signs reminding users of safety etiquette. You can also share your concerns at the Loop webpage - pima.gov/theloop - and clicking on the “Send Feedback” link on the right-hand column. Feedback will be shared with the Loop Advisory Committee, which works with County personnel to address general user concerns. 

    Can I ride my motorcycle or electric bike on the Loop?

    No. The Loop is a multi-use path and is heavily used by pedestrians; therefore, for safety purposes, no motorized vehicles or devices are allowed. (ADA accessibility and official vehicles are exempt.)

    The Loop moves between the city of Tucson, Marana, Oro Valley and unincorporated sections at various locations along the path. In September 2018, the city passed an ordinance, #11582, relating to electric bicycles. The ordinance permits riding an electric bicycle on shared-use paths under the jurisdiction of the city of Tucson. However, the sections of the Loop within the City of Tucson incorporated limits and in unincorporated Pima County are under the management authority of Pima County and the Pima County Regional Flood Control District and the use of electric bikes on the path is prohibited as declared on our Loop Guideline signage.

    In addition, Arizona Revised Statute 28-819 addresses electric bicycles and electric standup scooters. It notes that an operator of an electric bicycle is granted all the rights and privileges and is subject to all of the duties of a person riding a bicycle. However, it also states that "A local authority or agency of this state having jurisdiction over a bicycle or multiuse path may prohibit the operation of a class 1 electric bicycle or class 2 electric bicycle on the path." That is what Pima County has chosen to do for the safety of all users.

    Applying this guideline for all stretches of the Loop retains a level of needed consistency and promotes the safety and well-being of all users. Equally, for safety purposes, this guideline applies to any and all motorized or artificially-propelled devices (ebikes, scooters, hover boards, skateboards, etc.). Pima County is working toward proposing a comprehensive County Ordinance that would prohibit motorized vehicle or device use on any stretch of The Loop. Meanwhile, those who choose to violate the rule are at risk of being cited in violation of the current adopted Pima County Park Rule 1.070 (a Class 2 misdemeanor) and also knowingly accept the liability associated with any accident between a motorized vehicle or device user (illegal) and a non-motorized (legal) user of the Loop.

    I have seen motorized vehicles such as ATVs and motorcycles on The Loop. How is this allowed to happen?

    The County's Natural Resources, Parks and Recreation Department and Regional Flood Control District continue to install barricade systems and take measures to prevent unauthorized motorized devices on The Loop. Vandalism, at times, creates illegal entry points and staff repair upon discovery.  Additionally, unauthorized all-terrain vehicles enter at points in the river bed outside jurisdiction or where the County does not have path. They’ll travel through the river bed and then find a creative location to enter up onto the top of the bank and onto the path.  It’s been a constant battle on the south and north Santa Cruz as well as on the CDO.  

    As for other motorized devices, most of our 270+ designated entry points have bollards, cable gates or pipe rail configurations that allow cyclists and pedestrians to enter. These designated points of entry do not prevent 2-wheel motor cycles, e-bikes, e-unicycles, e-skateboards and other various motorized devices with narrow frames from entering. As with any unsafe or illegal activity, the park patron should call 911 to report the incident.  

    Meanwhile, those who choose to violate the rules are at risk of being cited in violation of the current adopted Pima County Park Rule 1.070 (a Class 2 misdemeanor) and also knowingly accept the liability associated with any accident between a motorized vehicle or device user (illegal) and a non-motorized (legal) user of the Loop.

    Can a person with bad knees or a condition like arthritis use a pedal assist e-bike on the Loop?

    The Americans with Disabilities Act defines a disabled person as one who has a physical or mental impairment that substantially limits one or more major life activities, one who has a history or record of such impairment, or one who is perceived by others as having such an impairment.Pima County’s Natural Resources, Parks and Recreation oversees maintenance of the Loop. Our Loop Guidelines are intended to set the “motorized vehicle or device” standard at that legally-determined “disabled person” level so as to create an unambiguous statement of Departmental intent that motorized device use on the Loop is only authorized if the user believes that they possess a condition that meets this legally-defined standard.  For all intents and purposes, a person with a disability and their motility device using Pima County multi-use trails and pathways are considered by Pima County to be pedestrians by our guideline. 

    The goal of NRPR is to be as inclusive of all users as possible on The Loop while retaining the necessary element of safety for everyone using The Loop whether on foot, horseback or on wheeled devices.  This would include allowing Loop users to utilize select electric motorized devices if they can prove a “demonstrable medical need.”  An example would be a user who is temporarily rehabilitating from knee surgery or who is otherwise in chronic pain due to a documented medical condition.  NRPR recommends that any Loop user carry sufficient documentation of their medical condition which necessitates use of a mobility device.

    Therefore, if a user believes that his or her condition would either constitute a disability under federal ADA definition, or otherwise meet the definition of demonstrated medical condition as outlined herein, and he/she possesses documentation of that condition, then it should be acceptable to use a motorized mobility assistance device under our published Loop guidelines. 

    What other rules govern use of the Loop?

    See the "Complete List of Loop Guidelines."


    Who takes care of cleaning up the Loop?

    Pima County Regional Flood Control District (RFCD) has funded and built the Loop within our river park system as a recreational amenity for community use.  Pima County Natural Resources, Parks and Recreation (NRPR) is under contract with RFCD to provide maintenance service to the Loop path, landscaping, restrooms and adjacent parking lots. 

    Who handles clean up down in the riverbed?

    The Regional Flood Control District manages overall regional watercourse maintenance efforts. They don’t generally do “spot” clean ups, but instead work those clean ups into into their maintenance of long segments of watercourses.  

    How do I contact them if I spot debris in the path or some other issue?

    Report the incident using the Loop Feedback Form. Try to be as specific as possible on the location of the issue you spotted. You also may report it via the Loop’s Facebook page.

    Why are maintenance crews leaving clusters of woody debris or rock piles within sight of the Loop trails?

    Some portions of The Loop were included in constructed ecosystem restoration projects built by the Regional Flood Control District - Pima County, in support of the biological goals and objectives of the The Sonoran Desert Conservation Plan - Pima County. Clusters of larger brush and/or loose rubble have been placed and maintained in several of these projects to provide habitat for native wildlife. The constructed and maintained habitat piles are located over 50-feet away from The Loop path and structures. The habitat piles provide shelter from predators and extreme temperatures in areas that would otherwise be wide open. Providing several piles in clusters also enables slower wildlife, such as Regal Horned Lizards, to escape from predators. Other native wildlife that utilize shelter habitat piles include lizards, snakes, toads, birds and more. Please review Safety on the Loop

    I often see mistletoe up in the trees along The Loop and have heard it’s dangerous to them. Why don’t you remove it?

    Mistletoe is extremely difficult and time consuming to remove. First, it tends to grow up high in the canopy where the sunlight hits, making it hard to access. Secondly, even if you prune it, buds embedded in the host plant's branches mean it's likely to grow back. Another option is to remove the infected branch entirely. However, this method can leave the plant vulnerable to other diseases and wood-destroying insects. Or, another technique is to trim the mistletoe back, then wrap the area in dark, light-excluding plastic sheeting to deprive the buds of sunlight, eventually killing the parasite. It can take up to two years for the mistletoe buds to completely die. These many challenges, coupled with the fact that NRPR is responsible for managing 155 parks encompassing approximately 250,000 acres of land, make it mostly prohibitive for staff to address mistletoe in our urban or natural resource parks. Additionally, Pima County has taken a natural approach, when possible, to maintaining many sections of the river park system.  When trees die due to age, disease, weather damage or other factors, they are evaluated for removal and/or replacement as appropriate. Learn more about mistletoe

    Who do I contact when I see homeless individuals camping along The Loop or in a county park?

    Report the incident using the Loop Feedback Form. Try to be as specific as possible on the location of the issue you spotted. You also may report it via the Loop’s Facebook page.

    How do county officials handle homeless issues?

    All are welcome on park property unless they’re breaking park rules. If homeless individuals remain on property after park hours, then they’re in violation and law enforcement can cite/remove. NRPR’s protocol is to:

    Construction and Improvements

    Where do I suggest improvements to the Loop?

    A Loop Advisory Committee was established in 2017 to address user concerns and look at future improvements to the pathway. Share your suggestions using the Loop Feedback Form.

    Have you thought of installing mile markers along The Loop?

    The entire trail is marked via GIS mapping on the Pima County-Natural Resources, Parks and Recreation Loop Interactive map.  

    This map has many fields and features including mile markings down to .25 miles.  Part of the problem with physically marking all stretches of the Loop is the fact it follows several water courses (Santa Cruz, Rillito, CDO, Julian Wash, Pantano, etc.) in several jurisdictions (Marana, Oro Valley, City of Tucson, City of South Tucson, Pima County). Likewise, many sections of the path are only on one side, not both sides, of the riverbed. The Loop Advisory Committee meets several times a year and has continued to debate the topic of marking the path. Many of the existing directional signs give good measurement to points of reference. 

    Where can I find the latest construction and maintenance updates?

    You can find these under “Notices and Closures” on the Loop website, the Natural Resources, Parks and Recreation website or on the Loop Facebook page.

    What is the status of extending The Loop to Tanque Verde Road?

    The Tanque Verde Creek extension of The Loop east of Craycroft Road to Tanque Verde Road will only occur along the north bank of the watercourse and a significant bridge structure will be required to provide a crossing of Sabino Creek. A south bank path was considered but much of the south bank between Sabino Canyon Road and Tanque Verde Road  is private property – often built out to the bank protection. The south bank section downstream of Sabino Canyon Road, heading toward Craycroft Road, is not viable as Tucson Country Club Estates have recorded legally binding land restrictions that prohibit a river park from ever being able to be installed adjacent to their country club. The first phase of this project is likely to be from Craycroft Road to Sabino Canyon Road, with the second phase being from Sabino Canyon Road to Tanque Verde Road. There have been, and continue to be, some preliminary discussions with key property owners within the Craycroft Road to Sabino Canyon Road segment. At this time, there is no time frame, unfortunately.

    What is the status of extending The Loop north of Catalina State Park?

    The Regional Flood Control District and NRPR are coordinating with the Golder Ranch Fire District to clear dense vegetation and create a fire break on County property along Lago del Oro Parkway. Walkers and cyclists may use this as a primitive path; however, paving of this path is not currently planned. Extending The Loop paved path into Catalina and to the County line would involve many complex partnerships. For example, The Loop would cross onto federal lands and would require federal approval and following the National Environmental Protection Act process.

    How do I make a donation to improve The Loop or fund a memorial bench?

    The Parklands Foundation is a non-profit organization that helps protect and enhance the parks and river parks in Pima County. Visit their website at: pimaparklands.org.

    Get your Loop apparel here!

    Loop jersey prices


    We have eight different Loop cycling jersey designs as part of our endangered species series. Arm warmers and leg warmers in most designs also are available.

    We also offer running shirts (short-sleeve and sleeveless) in two styles for both men and women. And we’re now offering Loop T-shirts, sunscreen, and hats!

    Before proceeding to The Loop Store, we recommend reading through our FAQs and checking our sizing chart.

    Please be advised that ALL SALES ARE FINAL.

    The Loop Store is located inside the Historic County Courthouse in the Southern Arizona Heritage and Visitor Center Gift Shop. Please check for latest hours of operation at The Loop Store online – online ordering is available 24/7. 

    Payable by credit card only.

    For more information, call (520) 724-7355 or email TheLoopStore@pima.gov.

    The Chuck Huckelberry Loop Map

    Loop map October 2019

    The Chuck Huckelberry Loop Interactive Map

    Loop interactive map


    Loop History Map

    History map thumbnail

    Loop History Map website

    Art on The Loop Map

    Loop art map thumbnail 
    Visit the Loop Art Map website

    Downtown Art Map

    Downtown Art Thumbnail

    Tucson Metro Bike Map 

    Metro bike map
    Produced by the Pima Association of Governments, the Tucson Metro Bike Map includes enhanced bike routes, shared-use paths and bike boulevards around Tucson. For printed copies of the map, contact PAG at (520) 792-1093.

    For copies of any of the other maps listed here, visit any of the following locations:
    • Pima County Natural Resources, Parks and Recreation, 3500 W. River Road;
    • Pima County Administration Building, 130 W. Congress St., 1st floor - Lobby
    Or contact us and we'll mail you a map: (520) 724-7355 or email us.
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    The Chuck Huckelberry Loop

    Natural Resources, Parks and Recreation

    3500 W. River Road
    Tucson, AZ 85741
    (520) 724-5000

    Regional Flood Control District
    201 N. Stone, 9th Floor
    Tucson, AZ 85701
    (520) 724-4600

    Department News
    Department Directory
    Department Feedback Form
    Department Calendar
    Donate to improve The Loop or fund a memorial bench