Three Peaks Loop Trail is a 13.1 mile moderately trafficked loop trail located near Boulder, Colorado that features beautiful wild flowers and is only recommended for very experienced adventurers. The trail offers a number of activity options and is best used from April until October. Dogs are also able to use this trail but must be kept on leash.

DISTANCE
13.1 miles
ELEVATION GAIN
4,734 feet
ROUTE TYPE
Loop

dogs on leash

birding

hiking

nature trips

rock climbing

trail running

forest

views

wild flowers

wildlife

rocky

Start: Chautauqua Park Main Entrance S. Boulder Peak - 8549' Bear Peak - 8459' Green Mtn. - 8150' End: Chautauqua Park Main Entrance

trail running
1 month ago

Did this once - exhausted. Trying for the 5 peaks of Boulder's skyline next year!

hiking
4 months ago

Incredible trail with great views. Took a little over 7 hours but wasn’t really hurrying to get through the trail. Would definitely do again. Be sure to bring enough water.

hiking
6 months ago

Closer to 14 miles and 5,000 feet of total elevation gain (according to Strava). Really enjoyed this hike though, I just didn't bring nearly enough food or water, and there is very limited sun cover on the more difficult parts of the route (Bear Peak's west ridge and South Boulder Peak). The descent down shadow canyon and subsequent death-march on the Mesa trail back to Chautauqua Park were very painful. It took me almost 8 hours exactly to complete the hike round-trip. Be prepared for this one. Wouldn't do it again but I'm glad I did it.

7 months ago

Many trails shown in the map are closed which makes me detour around for more than one mile. In general a good but tiring trail.

hiking
7 months ago

Monday, November 06, 2017

14.1 miles according to my Garmin watch. 5 hours for me, trail running.

hiking
Friday, August 18, 2017

GPS clocked this at closer to 14 miles. I'm guessing it's because the app tried to have me go straight down the mountain where there was no trail. Hated coming down Shadow Canyon! First part is the best part, not too excited about the burned out area near Bear and S. Boulder Peaks. Not one I'm looking to repeat but good workout.

hiking
Sunday, July 09, 2017

Couldn't summit Bear and SB peaks due to weather. Started by approaching Amphitheater Trail and up to Green Mountain. There are closures coming off of GM that redirect you through the newer Green Bear trail. This probably adds about an extra 1.5 miles. View the updated map. I hiked to the saddle and down through Shadow Canyon to avoid the storms that luckily stayed on the West side the remainder of the trip. This is a very long hike that will burn your legs on the way up and jerk your knees coming down either way you start. Awesome hike to get ready for 14ers.

Sunday, July 02, 2017

Great hike. Plan for a few hours

Wednesday, May 17, 2017

This is an amazing but challenging hike . You'll experience several environments throughout the loop -- some more strenuous and others less so. Overall a great loop to get to some of the most beautiful peaks in Boulder!

hiking
Saturday, May 06, 2017

Holy crap this is a tough trail. But it is totally worth it. The only reason I didn't give it 5 stars is that the Green Bear trail has been re-routed, which adds an extra 1 - 1.5 miles to the hike. Also, skip the flat part at the end and have two cars, if you can.

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1 month ago

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8 months ago

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8 months ago

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Wednesday, September 20, 2017

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Tuesday, July 25, 2017

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Saturday, July 08, 2017

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Sunday, June 18, 2017

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Thursday, March 30, 2017