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Temporary Closures, Advisories and Fire Bans

Trail Map

Open Space and Mountain Parks (OSMP's) interactive trail map includes trail closures - an easy option to check before your trip!

COVID-19 Alerts

Always bring a face covering when you leave home and maintain 6 feet of distance

  • You will need a face covering to visit Boulder’s open space trails and parks. Always bring one with you when you leave home.
  • Place it over your nose and mouth when you can’t maintain 6 feet of distance from others.
  • Wear it around your neck or wrist when no one else is around.
  • Parents should help children older than 2 years old properly wear a face covering.
  • Help protect vulnerable community members and each other. 

Don’t forget: Keep the space in open space! Always stay at least 6 feet from others you don’t live with or haven’t agreed to have close contact with.

Please follow these other responsible recreation reminders:

  • Visit to see current trail closures, historical data that shows areas of high and low open space use and trails that are wider than 6 feet. See when trails are busiest through our Visitation Data Explorer.
  • Protect first responders. Know your limits and don’t take unnecessary risks. 
  • Plan ahead and consider recreating closer to home as parking is extremely limited - especially on Flagstaff Mountain.
  • Remember: Leave No Trace! Pick up trash and dog waste. Stay on trail and walk through mud. Step off if you need to maintain distance but quickly step back on trail.
  • For more responsible recreation reminders, please visit the Covid-19 Recovery page.
  • Foothills pdf 

Muddy Trail Closures

OSMP Closed Trails
Muddy trail closures as of Wednesday August 12, 2020.

No trails are currently closed due to muddy conditions.


Other Trail Closures and Advisories

Settler's Park Trailhead temporary closure August 12, 2020
The trailhead will be closed for maintenance work on Wednesday, August 12. Nearby trails will remain open. 

South Boulder Creek Trail section closed beginning July 27, 2020
OSMP will resurface portions of the South Boulder Creek Trail to help improve outdoor experiences for community members experiencing disabilities. During construction, OSMP will close the soft surface trail that runs south of Baseline Road and is between South Boulder Creek and the paved multi-use path in the area. This closure will be in place from Monday, July 27, through Thursday, Aug. 13. Visitors can use the paved multi-use path east of the creek during this closure. OSMP encourages community members to park at the East Boulder Community Center because the department will place trail maintenance equipment and materials at the Bobolink Trailhead limiting parking spaces. 

1st/2nd Flatiron Trail work beginning August 3, 2020
The 1st/2nd Flatiron Trail will be closed from 8 am to 4:30 pm every Monday through Thursday into the fall while repair work is completed. Climbers may access the First Flatiron and then downclimb through the project area, with delays possible.

Xcel Energy work continuing July 2020
Xcel Energy is continuing its multi-phased project to replace and reconstruct most of its electric transmission infrastructure southwest of Boulder beginning as soon as July 27, 2020. The work requires a long-term closure of the NCAR-Bear Connector Trail on federal lands. Visitors along the NCAR-Bear Canyon, Bear Canyon and Mesa trails may also see intermittent full-day closures and one- hour closures while work is underway. Please visit for details on this project. 

Anemone Hill Trail Construction beginning May 14, 2020
Please visit for details on this project and trail closures.

Gregory Canyon restroom closed 
The restroom is temporarily closed because of maintenance issues. This notice will be removed when the restroom has been reopened.

Chapman Drive and Boulder Falls impacted by work in Boulder Canyon
Visitor access to these areas – either by bike, by car or by foot – will be limited while the Colorado Department of Transportation conducts work in Boulder Canyon. For specific closure times, please visit the project website. Boulder Falls is currently open. Temporary closures will still occur until construction is complete. 

Rock Island 1 in Boulder Canyon closed
Rock Island 1 is closed. The rock fractured and part fell onto the Boulder Canyon Creek path. Sections of the remaining rock have been evaluated as unstable so it is closed until recommended bolting can be completed.   

No parking along Highway 170 near Doudy Draw and South Mesa Trailheads
Please remember that parking is not allowed on Highway 170 at any time.