Boulder Area Trails App

Boulder Area Trails provides users with a county-wide, interactive, mobile trail map application.

Download in the App StoreDownload in Google Play

Looking for an app that shows trails in all of Colorado and not just those in Boulder County?
Check out COTREX, the state's official trails app.

App Features

The Boulder Area Trails App provides access to all trail information in and around Boulder County!


Provides a single source for all designated public recreation trails and trailheads in and around Boulder and Broomfield counties.


Trails closures are posted as soon as they are announced by each participating agency.


The app will continue to work even when there is no cellular service.


Select your favorite trails and trailheads for easy access.

The Boulder Area Trails App is 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.


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About The App

The application includes trails from 12 agencies including:

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

Report A Problem or Provide Feedback

Let us know if you experience an issue with the app, have a suggestion for improvement, or just want to provide a general comment.

Fill out the feedback form.

Privacy Policy

Updated May 1, 2019

Your privacy is important to us and that is why the Boulder Area Trails App does do not collect any personal information, including your location or identity, when you use the app.

Third Party Services: The Apple App Store and Google Play have their own privacy policies. Part of those privacy policies state that they will share with us basic statistics, such as the number of times the app was downloaded, and how many times the app crashed. The data shared with us does not contain personally identifiable information and is in aggregate form.

Favorites: When you designate a trail or trailhead as a “favorite,” that information is stored directly on your device. It is not communicated with us and we do not know which items you have designated. Because of this, there is no way to copy or transfer your favorite items to another device.

Links to Other Sites: The app contains links to other sites. If you click on a link, you will be directed to that site and are subject to that site's privacy policy.

Changes To This Privacy Policy: We may update our Privacy Policy from time to time while still honoring your privacy. You may review this page periodically, as any changes to the Privacy Policy will be posted on this page. Those changes will be effective immediately after they are posted on this page.


The information contained in the Boulder Area Trails Mobile Application is for general information purposes only. The Boulder Area Trails Project makes no warranties regarding the accuracy, completeness, reliability, or suitability of this map. The Boulder Area Trails Project disclaims any liability associated with the use or misuse of this application. In accessing and/or relying on this map, the user fully assumes any and all risk associated with the information contained therein.