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Green Mountain Loop

HARD 490 reviews
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Green Mountain Loop is a 5.7 mile moderately trafficked loop trail located near Boulder, Colorado that features beautiful wild flowers and is rated as difficult. The trail is primarily used for hiking and trail running and is best used from March until November.

Distance: 5.7 miles Elevation Gain: 2,798 feet Route Type: Loop

hiking

running

forest

views

wild flowers

snow

no dogs

A popular peak hike providing views of the Indian Peaks and Boulder. From Chautauqua take the Meadow Trail to the bridge at the Gregory Canyon Trailhead. (Parking Fees apply on weekends and holidays in the summer). From here either way is fun. Clockwise is a little steeper, but the uphill part is more in the shade and the views are refreshing on the way up. Go up Amphitheater, then upper Saddlerock, then EM Greenman to the peak. Enjoy the views on a clear day and head down the West Ridge Trail, to Ranger, to Gregory Canyon Trail, back to the bridge, then back Baseline Trail to Chautauqua. For an extra workout, go back on Bluebell-Baird, otherwise head down the baseline trail to the trailhead.

hiking
2 days ago

Great trail, good workout! Steep climbing all the way up to the peak, great views. Trail was clear, a few spots of melting snow closer to the top.

hiking
5 days ago

I hiked this trail a few years ago. Strenuous steady incline and worth the stunning views. Wear good traction hiking shoes and bring crampons as there was snow on the top.

hiking
rocky
snow
6 days ago

Definitely rated appropriately as hard. First 3 miles were at a seriously incline. Beautiful views at various points making good spots to grab some water. Climb 2500 ft to reach summit, which is a great 360 view. Pack plenty of water and would suggest a snack along the way. Would recommend for those ready for change in elevation, terrain and temperature. Encountered snow and ice at various points, making the trail more difficult. Overall, great hike and beautiful views.

hiking
rocky
scramble
snow
7 days ago

Very dangerous when icey. Ended up dislocating my knee on the way down... Shouldve been wearing better shoes for the ice. The loop itself is 5.7 miles but if you start where the hike suggests from the parking lot, it ends up being 7. Clockwise was definitely the better way to do it.... but gosh that ice was intense. Gorgeous views at the top, will try again when it's not snowy and icey

hiking
8 days ago

Great trail with great views throughout. Be prepared for a lot of ice on the trails near the top and the west side.

hiking
13 days ago

I think the best way to go for your knees is up saddle to the the ranger trail em cut off then to summit via ranger trail and descend on em greenman and back down to ranger

hiking
14 days ago

This is a great hike but going clockwise is hard. A lot of steps!! But once you get to the top worth it! Doing down was very easy and smooth. My Apple Watch tracked 7 miles. Make sure you know the map because there is a lot of random trails that go off of it.

hiking
14 days ago

Definitely rated properly. Great hike and workout.

hiking
22 days ago

This was tough but a good workout. Very steep. This was definitely a longer trail than 5.7 miles. Our Apple watches recorded to to be around 7. Just remember to bring lots of water and be prepared for the elevation gain!

hiking
24 days ago

Such a good hike! I agree with going clockwise but saw many people going the other way. If you’re looking for a day hike that will give you a workout, great views, and still have the afternoon to explore boulder, this is it.

hiking
26 days ago

great hike..did it clockwise..nice incline all the way up great workout

running
1 month ago

Did it running today (clockwise). The way down is very fast and pleasant. Probably more than if done the other way around. Took me precisely 1h45 for the loop. Not a 5 five star trail though, mainly forest (good for running)

hiking
1 month ago

Did clockwise as well. Beautiful day and one of my favorite summits in Boulder. Descent is tough on old knees.

hiking
rocky
1 month ago

hiking
1 month ago

Go clockwise to save your knees. If it's super hot start on Saddle for more shade

hiking
1 month ago

Beautiful and challenging hike. I would definitely recommend doing this clockwise. There's a lot of steep trail and some rock scrambling on the way up that i would not enjoy descending. The Canyon Trail is a nice relief after the tough climb up. Beautiful views all along the way.

hiking
2 months ago

If you’re hiking during a summer weekend, I would recommend getting there early (before 7:30am). We arrived at 7:45am and got one of the last street parking spots near the entrance. I also recommend bringing some good hiking shoes - I wore tennis shoes and rolled my ankles a few times during the rocky portions of the trails. The hike took about 3 hours. We noticed that on our way back down, the trail was becoming very congested with other hikers, and we were happy that we got there early!

hiking
rocky
2 months ago

Finally got a cooler morning here to do this hike. I went clockwise going up E.M. Greenman to the summit and down Ranger. Definitely harder going up, but saves your knees on the way down. I started at Chautauqua as the trail map shows and it took me 3.5 hours.

hiking
2 months ago

One of my favorite hikes in town! Strenuous and rewarding hike with nice views of the back range and a nice place to chill out for a few minutes at the top to celebrate your hike. We usually ascend starting with Saddle Rock and take Ranger/ Gregory Canyon for the descent. Don't miss the Ranger trail turn. You could end up a bit lost if you miss the trail.

hiking
rocky
2 months ago

Started at 5:25AM. Beautiful sunrise, saw few deers, nice weather and not crowded in the morning.

hiking
rocky
2 months ago

hiking
2 months ago

Awesome trail. Hiked once in snow. It took about 8 hours. In the summer it’s only about 3 hours. All the way shaded.

hiking
2 months ago

So this is an extremely hard hike especially if you are starting up the amphitheater trail. It is about to a 2 and a 1/2 miles of steap steap incline of rock hiking to the summit. Also fair warning if you are attempting to go this direction as well it is not very clear in trail markings so I recommend downloading some kind of trail map so that you have it handy to keep you on the trail. If you decide to take the loop from the Gregory Canyon trail this trail is a gradual incline to the summit with some rocky places on the trail. Its a little bit longer route but you'll have a better chance of not having altitude problems. Oh and I consider myself an average hiker and it took me about 4 hours for the entire Green Mountain loop hike! I hope this was helpful!!

hiking
3 months ago

hiking
rocky
3 months ago

hiking
3 months ago

Definitely a great workout. Like doing the stair master for 3-4 miles. Good news is that it’s mostly in the shade. Lost the trail and ended up coming down on another.

hiking
rocky
3 months ago

This trail is HARD. It’s harder than any other trail I’ve done in Boulder - Royal Arch included. The elevation is no joke. Straight uphill the first 4 miles, not even any flat sections. I do not recommend this as a hike for anyone but Colorado Natives or other high elevation places because elevation sickness could be a factor. Bring lots of water, snacks, and electrolyte supplements and you’ll get this trail done!

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