Important Updates:

Latest Updates Related to the Boulder Shooting and the Investigation. | More Info


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Boulder Area Trails App

Boulder Area Trails App Logo

OSMP Alerts

Winter conditions 

Winter conditions exist across open space! 

  • Trails may be icy & slick. 
  • Wear appropriate gear, such as traction devices for your shoes/boots.
  • Do not walk on ice-covered lakes and ponds.


People enjoy open space for physical, emotional and mental health. Remember to always be courteous. Don't forget: 

  • Only recreate with household members.
  • Wear a face covering when passing others. 
  • Stay on trail/walk through mud. Avoid stepping on vegetation. 
  • 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.

New Multi-Agency Trails App

The City of Boulder and 11 other agencies created a mobile application available for iOS and Android devices. The Boulder Area Trails app provides access to all trail information in and around Boulder County. The app is designed to enable users to find trails by use or type, plan routes by connecting local community trails, and link to the appropriate agency websites for more information. Before you head out, be sure to hit the app’s refresh button at the bottom left on a WiFi network to ensure you see all the trails! 

Download the Boulder Area Trails App


Logos of the participating agencies

City of Boulder and city Open Space and Mountain Parks (OSMP) regulations for dogs, bikes and horses may differ from other agencies and municipalities that maintain open space trails. Currently, all e-bikes are prohibited on OSMP trails but allowed on multi-use, paved paths within the City of Boulder. Please pre-plan your trip by reviewing city regulations to help our community members enjoy and protect their open spaces.

View more information on other OSMP rules and regulations, or call the department at 303-441-3440.

Participating Agencies

The application includes trails from 12 agencies including:

  • Boulder County
  • City and County of Broomfield
  • City of Boulder
  • City of Longmont
  • City of Lafayette
  • City of Louisville
  • Rocky Mountain National Park
  • Town of Superior
  • Town of Erie
  • Town of Lyons
  • Town of Nederland
  • USFS

The application was made possible by a grant through Colorado Parks and Wildlife and Great Outdoors Colorado.

More information can be found at

Screenshots from the app showing closures, trails and filtering capabilities.