Boulder Trail Closures & Conditions

Love the trails and keep your drivetrain happy

Love the trails and keep your drivetrain happy.

Boulder Trail Closures and Conditions

BMA maintains official open/closed statuses but we can’t be everywhere all the time so please contribute your own intel on the state of trails you’ve just ridden. And check out our guide to wet weather riding.

Betasso Preserve

Betasso is closed to bikes Wednesdays and Saturdays.

Boulder Valley Ranch

Erie Singletrack

Hall Ranch

Heil Valley Ranch

Brainard Lake and Peaceful Valley

Lefthand OHV


Marshall Mesa / Doudy Draw / Flatirons Vista

Maryland Mountain

Rabbit Mountain

Valmont Bike Park

Walker Ranch

All Boulder County

Report Trail Conditions

Help keep the above trail conditions up to date by adding your report here.

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Additional Trail Condition Resources

Has a trail not been updated recently? Here’s some more resources.

Trail Apps

These interactive resources are available as both websites and phone apps and display trails open for mountain biking as well as some trail conditions.

Trailforks - World's largest trail database and management system for trail associations, builders and riders. Started for mountain biking trails, now including all trail uses.

MTBProject - Born from the dream to help people get outside, MTB Project showcases thousands of routes and trails in your own backyard, across the U.S. and around the globe.

Boulder Area Trails - Designed to connect local communities, enable users to find trails by use or type, allow users to plan routes, and link users to agency websites for more information.

Colorado Trails Explorer COTREX - View trails by allowed uses on the map, browse featured routes, download offline maps, record trips and notes in the field, complete challenges to earn badges, and share your experiences with the community. 

Social Media

BMA Facebook Group – Our community forum and a great place to look for and ask about trail conditions
303 Trail Monitor Facebook Group – For all trails all across the Front Range and Colorado. Find the info you’re looking for and connect with other riders.
Front Range Fattys Facebook Group – The resource for current fat (snow) biking conditions

#boco_trails – Popular Twitter tag

Marshall Mesa
Doudy Draw
Boulder Valley Ranch

City of Boulder Temporary Closures, Advisories and Fire Bans – Up to date trail closures information

OSMP Interactive Trail Map – Includes trail closures

City of Boulder Twitter – News from OSMP including trail conditions and closures

Text “OSMP” to 888-777 to sign up for updates about trail closures, muddy trails and prescribed burns

Valmont Bike Park

Valmont Bike Park Facebook and Twitter pages – Information on what’s happening at Valmont including park closures

Valmont Bike Park webpage

Betasso Preserve
Heil Valley Ranch
Hall Ranch
Walker Ranch

Boulder County Trail Closures, Notices, Alerts, & Conditions – List of trail closures

Boulder County Parks and Open Space Trail Page – List of all trails in the BCPOS system. Green check means open, red x means closed

Boulder County Parks and Open Space Twitter feed

Sign up for email or text alerts about trail closures

Erie Singletrack

Erie Parks & Recreation Facebook page – Information on what’s happening at Erie Singletrack including park closures.

Subscribe to text alerts
Erie Singletrack webpage

Peaceful Valley

Peak 2 Peak Trail Conditions Facebook page – Information on trail conditions


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