Discover and explore Colorado’s unique trail experiences with the Colorado Trail Explorer. Available for free, COTREX offers the most comprehensive trail map available for the state and is built atop data from over 230 trail managers.
Browse or search to find trails and Feature Routes that match your activities or interests.
Change activity type to dynamically filter trails on the map.
No cell coverage? No problem! Download maps ahead of time for a continuous experience that doesn’t depend on your network.
Increased opportunities for discovering new trails;
COTREX offline maps are lightweight in size and easy to download.
Capture the details of your outdoor experiences by recording Trips.
Go beyond simple photos by taking and classifying rich Field Notes along the way. Choose from 45,000+ classifications that include trail conditions, species, rocks and minerals, historic places, points of interest, and much more.
Seamlessly sync activity recorded on your devices with the web.
By recording and classifying Field Notes, you can complete Challenges and earn Badges for your profile.
Inform and inspire the entire COTREX community by sharing your Trips and Field Notes publicly or submitting Trip Reports.
View activity feeds for all users or just the ones you follow.
By sharing your experiences, you also help to inform trail managers about current conditions on the ground.
Please join us in our first ever Day of Giving by making a donation today. Your contribution can go a long way to help protect our wildlife and natural spaces, support our state parks and outdoor recreational opportunities, and introduce people to the wonders of Colorado's great outdoors.
Thanks for your continued support!