Eagle, Hidden Valley, and Cobalt Trail

The Eagle, Hidden Valley, and Cobalt Trail is a must add to your Boulder adventure itinerary. Hike in the company of mountain bikers and horseback riders as you trek along the wide, dirt path through the meadowlands. Relatively secluded compared to the neighboring Boulder Reservoir Trail, this nature walk is an awesome option for those seeking a more relaxing and quiet adventure. When hiking this path in the summer months, be sure to keep an eye and ear out for rattlesnakes.

Embark on your journey along the Eagle, Hidden Valley, and Cobalt Trail from the Eagle Trailhead. From here, track west along the path to the first intersection. At this point, keep left, passing the Boulder Valley Ranch Pond. Hike the Eagle Trail up a small mesa, to the Mesa Reservoir. Here, veer left, and you will be diverted onto the Hidden Valley Trail. Track this path along a small stream before confronting a confusing intersection. At this junction, take the Cobalt Trail, merging onto the Sage Trail at the path’s end.

Follow the Sage Trail through the meadowlands, revealing sights of the Boulder Reservoir. Soon you will reconnect with the Eagle Trail. Turn left and retrace your footing east along this path back to the trailhead.