Gregory Canyon and Amphitheatre Loop Trail

Difficulty
This reflects the 10Adventures difficulty rating for each route. We aim to keep ratings consistent across regions.
Hard
Duration
This reflects the estimated time the majority of users will take on this trail. If you are slower, add time to the top-end figure. If you are fast, then you may complete this route faster than this time range.
3.5-5h
Distance
This reflects the return distance of this route as measured by the GPS file.
9.2 km
Elevation
This reflects the total elevation gained throughout this route as measured by the GPS file. This includes all ascents and descents, and is higher than what is quoted in most route guides, which simply measure the distance between the starting-point and high-point of the route.
724 m
User Ratings
These ratings are completed by users who have completed this trail and not subject to reviews by 10Adventures.
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Directions to Trailhead

The Gregory Canyon and Amphitheatre Loop Trail is a demanding adventure through the Boulder Open Space that exhibits the diversity of the Colorado wilderness and the beauty of the various ecosystems. Reserved for intrepid adventurers, this demanding hike requires stamina.

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Route Description for Gregory Canyon and Amphitheatre Loop Trail

The Gregory Canyon and Amphitheatre Loop Trail is an epic excursion through the wilderness. Hike up through canyons, up to summits, beneath tree shade and along meadowlands. Immerse yourself in nature and explore the flora and fauna of the area as you trek through the open space. Make sure to wear sturdy footwear as you will be navigating rocky terrain. Additionally, when hiking in the winter months, be sure to wear microspikes to safely navigate the likely icy terrain.

Embark on your adventure along the Gregory Canyon and Amphitheatre Loop Trail from the trailhead, tracking the Amphitheatre Trail. Hike this path past craggy cliffs up to an intersection with E.M Greenman Trail. This path will guide adventurers all the way up to the summit of Green Mountain. Revel in the sights of the Front Range snow-capped peaks and retrace your footing back down the E.M Greenman Trail. At the junction with the Amphitheater Trail, keep left along the path.

At the trail’s end, merge onto the Ranger Trail down to the trailhead at Flagstaff Road. Here, keep right and hike along the Gregory Canyon Trail. This route will gently descend all the way down the canyon, delivering you back to the trailhead.

Getting to the Gregory Canyon and Amphitheatre Loop Trail Trailhead

The Gregory Canyon and Amphitheatre Loop Trail departs from the Gregory Canyon Loop Trail at the end of the Gregory Canyon Road.

Route Information

  • Backcountry Campground

    No

  • When to do

    Year-round

  • Pets allowed

    Yes - On Leash

  • Family friendly

    No

  • Route Signage

    Average

  • Crowd Levels

    Moderate

  • Route Type

    Lollipop

Gregory Canyon and Amphitheatre Loop Trail Elevation Graph

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Gregory Canyon and Amphitheatre Loop Trail Reviews

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