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Alternating Trail Use Pilot Project
Photos showing hikers, a mountain biker, and equestrians

Alternating Trail Use Pilot Project

Pilot Project Will Not Move Forward

On Tuesday, June 30, Boulder County Parks & Open Space staff presented findings, options, and a recommendation to the Boulder County Commissioners regarding the exploration of alternating usage on select trails to improve safety and enhance visitor experiences.

Following the presentation, the commissioners directed staff to focus on working with trail users and the broader community to improve understanding of the rules and etiquette for trails shared by hikers, runners, cyclists, and equestrians.

A proposed pilot— which would have designated certain trails for different uses on different days— will not move forward based on direction from the commissioners at the June 30 work session.

“Thank you to everyone who took the time to share their trail experiences with us,” said Parks & Open Space Director Jason Seuc. “We have greatly expanded our understanding of how people use trails and why they may choose not to use them. We hope community members will continue sharing their thoughts as we explore additional signage, education, and other strategies to help everyone enjoy the county’s trails safely.”

Comments and suggestions can be emailed to posinfo@bouldercounty.gov or submitted using the general comment form.

Share the Trail Events

Saturday, July 11, 10 a.m.- 12:30 p.m. at Caribou Ranch

Sunday, August 2, 9 a.m.-noon at Betasso Preserve

Registration is not required. Visit the trailhead anytime during the event to meet the Parks & Open Space education team and volunteers and learn more about sharing the trail.

Background

Boulder County explored a community-informed pilot program that would have tested alternating usage on select trails to potentially improve safety and enhance the experience for users. The pilot would have temporarily assigned specific days or times for different users (hikers, bikers, equestrians) instead of having all activities allowed at the same time.

Short-Term Pilot Project

The Boulder County Commissioners were interested in whether trying alternating use could improve safety and enhance the visitor experience and asked staff to create a community‑informed pilot. This effort responds to and allows staff to explore ways to improve how busy, shared trails function in real conditions. The pilot was intended as an opportunity to test a short‑term approach and learn together before any long‑term changes were considered.

The community benefits from many local trails used for biking, hiking, and horseback riding. The pilot would have temporarily assigned certain days or times for different uses instead of having all activities occur at once. Alternating use means specific activities are allowed only on designated days or times on the same trail.

The pilot would not have involved building new or parallel trails. It would not have converted multi-use trails into single-use trails, or single-use trails into multi-use trails. It would have only considered alternating use scheduling options on trails that are currently designated as multi-use for biking, hiking, and horseback riding.

The pilot was not a permanent change. It was intended as a short‑term test designed to show what works, what does not work, and what impacts different approaches might have. Community feedback would have helped shape the pilot’s design, and after it was in place, additional feedback would have been collected. All findings would have informed long‑term decision making by the Board of County Commissioners.

Survey

A survey was open April 20 through May 19 asking trail users to indicate support, opposition, and ideas for an alternating-use pilot. There were 7,522 responses.

Report and Survey Results

Open Houses

Open houses were held on April 30 and May 13. Attendees learned about the pilot, participated in a mapping activity, and provided feedback. Over 300 people attended the open houses.

Sign Up for Updates

Community members had the option to sign up to receive email or text updates about the project.

Frequently Asked Questions

What is a pilot?
A pilot is a temporary change used to test a new way of doing thing. It is not permanent. The goal was to try an approach on a small scale, gather community feedback, and understand potential impacts before any long‑term decisions are made.

What does alternating use mean?
Alternating use assigns certain days or times for specific activities on the same trail. Some trails allow multiple activities at once, such as biking, hiking, and horseback riding. Other trails have limits, for example hiking‑only trails. For example, at Betasso Preserve, bicycling is not allowed on Wednesdays and Saturdays but is allowed on other days.

Which trails will be part of the pilot?
Trails under consideration were existing multi‑use trails where multiple activities occur at the same time. Community feedback would have helped determine which locations moved forward for testing.

Why is Boulder County considering alternating use?
Following prior direction from the Boulder County Commissioners, Parks & Open Space explored if alternating use could address trail‑use conflicts, improve safety, or enhance visitor experience. The pilot would have evaluated real‑world impacts with community involvement.

How long will the pilot last?
The pilot would have taken place and be concluded by the end of 2026.

How can I help shape the pilot?
You could have taken the community survey or attended the open houses. Feedback would have helped design the pilot. Additional feedback would have also been collected once the pilot was in place.

Who will make the final decision about permanent changes?
Results from the pilot would have been provided to the Board of County Commissioners. They would have determined whether any permanent management changes should be considered.

2025 Visitor Study Findings

Every five years, Boulder County conducts a system-wide demographics and satisfaction survey. These visitor studies complement regular annual research and look at long-term trends in demographics, preferences, attitudes, and behaviors. Some of the information most relevant to this pilot includes:

  • Countywide visitation has grown since it was first measured in 2007 (880,000 visits), peaking in 2020 at 2.1 million visits, and declining slightly from 1.8 million visits in 2024 to 1.7 million visits in 2026.
  • Heil Valley Ranch recorded approximately 66,000 annual visits in 2025, similar to Betasso Preserve, where alternating use is already implemented.
  • Hiking and biking remain the dominant activities across the system, with biking especially prominent at Heil Valley Ranch, Betasso Preserve, and Hall Ranch.
  • Conflicts are infrequent systemwide (about 4%). Among reported incidents, negative interactions between bicyclists and pedestrians were the most common.

Please see the complete 2025 Five-Year Visitor Study for more details.

Prior to the Cal-Wood Fire in 2020, Heil Valley Ranch was the second most visited park with 110,000 visits in 2019 (second only to Pella Crossing). Please see the 2025 Annual Visitation Report for complete details about visitation numbers last year.

Visitor Experience and Activities

According to the goal interference theory in recreation, “conflict” may occur when visitors interfere with one another’s goals on the trail, leading to unpleasant experiences. Visitors were asked if they experienced conflict that day, and 4% of visitors across all parks reported experiencing a conflict. Conflicts between visitors participating in biking and pedestrians were reported due to differences in speed, difficulty in sharing narrow trail space, lack of communication, and understanding requirements for yielding. At Heil Valley Ranch 4% of respondents reported experiencing conflict that day (6 responses) and Betasso Preserve had 5% of visitors report conflict that day (10 responses).

Across all parks, the three most frequently reported visitor activities are hiking (55%), biking (21%), and running (7%). In 2025, Betasso Preserve (where alternative, hiker only use days have already implemented), Heil Valley Ranch, and Hall Ranch had the highest percentages of visitors reporting biking as their primary activity.

Primary Activity Reported

  • Betasso Preserve (excluding Wednesday and Saturday)
    Biking: 70%, Hiking: 24%, Running: 3%, Conflict: 5%
  • Heil Valley Ranch
    Biking: 59%, Hiking: 25%, Running: 12%, Conflict: 4%
  • Hall Ranch
    Biking: 54%, Hiking: 35%, Running: 9%, Conflict: 7%

All Activities Reported

  • Betasso Preserve (excluding Wednesday and Saturday)
    Biking: 68%, Hiking: 37%, Running: 7%, Conflict: 5%
  • Heil Valley Ranch
    Biking: 59%, Hiking: 35%, Running: 17%, Conflict: 4%
  • Hall Ranch
    Biking: 56%, Hiking: 43%, Running: 15%, Conflict: 7%

Note: The survey asked visitors two questions: which activities they participated in that day, and which activity was their primary activity that day. Only the top three reported activities are shown for each question.

Alternative Day Use Study at Betasso Preserve

In 2013, visitors to Betasso Preserve were surveyed about the alternative day use regulation.

2013 Alternative Day Use at Betasso Preserve Study

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Parks & Open Space

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Longmont, CO 80503

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