Green Mountain via Gregory Canyon and Ranger Trail

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Boulder Open Space

Green Mountain via Gregory Canyon and Ranger Trail is a 5.4 mile heavily trafficked out and back trail located near Boulder, Colorado that offers the chance to see wildlife and is rated as difficult. The trail is primarily used for hiking, running, and nature trips. Dogs are also able to use this trail but must be kept on leash.

Length5.4 miElevation gain2,368 ftRoute typeOut & back
Dogs on leashHikingNature tripsRunningForestViewsWildlifeRocky
Waypoints (2)
1
Gregory Canyon Trailhead
39.99741, -105.29282
2
Green Mountain Summit
39.98219, -105.30158
Weather
UV Index
Daylight
Reviews (220)
Photos (1,720)
Recordings (251)
Completed (1,698)
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Joshua Fowler
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Hiking

Compacted snow had turned to ice in multiple places. I had boots, but I should have also had hiking poles and ice clamps for the condtions, particularly as well the trail got steeper and higher.

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Jason Younger
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HikingIcySnow

Ice/Snow on the upper section. Traction highly advised

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Brian Wieliczka
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Hiking

Yak tracks or spikes strongly recommended

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Stephanie Williams
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Hiking
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jose pacheco
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Hiking
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jose pacheco
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Hiking

did with extra 70 lbs. some ice, microspikes helped

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Jules baby
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Hiking
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Lisa Blunt
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Hiking

Hiking Peter, John & Ivy

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Brandon Evans
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Hiking
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Leigh Atkinson
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Hiking

little spit of snow and ice on the trail but went well with micro spikes

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Megan Flanagan
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Hiking

13-Dec-2020: Snowy after a fresh storm the night prior. We were the first on this trail. Perfect amount of snow to grip, some slippery spots but absolutely gorgeous and worth it. The parking lot for Gregory canyon was closed so we parked at Chautauqua.

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jose pacheco
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Hiking
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Dane Nelson
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Hiking

Great trail, started around 9 Saturday morning, got back to the trailhead at 1pm. Moderate traffic, 95% hikers wearing masks. Lots of dogs on the trail. Our dogs first hike and they made it no problem. Enjoy

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Nick Carchedi
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Hiking

This was a great first challenge when we were getting into harder hikes, but we have other favorites in the area. The beginning of the hike in Chautauqua is the prettiest part.

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Justine Roberts
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Hiking

We decided to do this as a loop and because we wanted to go up the ladder we took amphitheater to saddle to Greenman And then Gregory down. It was a really wonderful way to do the hike. It was moderately crowded for a Saturday morning but really not too bad. I would say 75% of the people were wearing masks or put them on when they encountered other people. Lots of families.

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Simon Guérard
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Hiking

Very crowded but nice walk next to Boulder - good workout! Can be done as a loop taking the other way down.

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Blake Leonard
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Hiking

Amazing view of boulder and the rockies, very challenging if you do saddleback

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Jose Quiroga
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HikingRocky

Was a great hike for my dog and I

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Sara Jean
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HikingRocky

Great solid workout. The views at the top are nice, but not as good as other hikes in my opinion - considering how much elevation gain there is. Lots of rocks and wished I had worn my hiking boots instead of tennis shoes. Saw a mama bear and her cub down at the trailhead. Be cautious!

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Nick Lofgren
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HikingSnow
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Sam Wade
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HikingIcy
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Laura McLaughlin
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HikingIcyMuddy
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John Cappelletti
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Hiking

Great day with Laura!

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Anne Osborn Elliott
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Wish I had the micro spikes with me. Super icy in places.

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Kevin Dorian
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HikingIcy
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Andrew Levy
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Hiking

We thought the amphitheater trail up to green mountain was better. Amazing summit and views on the perch of a large boulder. Steep but that trail has stairs most of the way make it more pleasant.

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Colin Towery
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Hiking

Green Mountain Loop from Chautauqua via Baseline and Amphitheater on outbound leg. Three humans of average fitness levels (for Boulder) and a doggo. Dogs not allowed on E. M. Greenman trail between the southern termination of Saddle Rock and the Green Mountain summit, so if you have a dog, you'll need to divert from Saddle Rock over to Ranger via the E. M. Greenman connector, which is an extremely fast and pleasant break from the uphill climb. Weather was perfect, the summit was crowded, and the chipmunks were like so many pigeons being fed peanuts and granola in a city park. This was my first time doing this hike, as I usually avoid the Chautauqua crowds. However, the park-to-park shuttle was great, and the wildflowers were popping in Chautauqua's meadows (especially the poppies)!

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Monica Poehner
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Hiking

kinda traffic-y but it’s a sunday. great weather, beautiful trail. short steep scramble at the top. no snow!

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