Mary Mountain-Nez Perce Trail

HARD 10 reviews
#94 of 208 trails in

Mary Mountain-Nez Perce Trail is a 20 mile lightly trafficked point-to-point trail located near Yellowstone National Park, Wyoming that features a lake and is rated as difficult. The trail offers a number of activity options and is best used from July until September.

20.0 miles
1,433 feet
Point to Point





nature trips

trail running




hot springs




washed out

no dogs

Wyoming Business Council Tourism Office, Frank Norris Jr. Travel Center, I-25 & College Drive , Cheyenne, WY, 82002-0660, Phone: 307-777-7777, Fax: 307-777-6472

6 days ago

Trail is not maintained in places. Started from the Canyon side. The first few miles the trail is wet and marshy. Several springs to jump over. The trail is not always well defined for first 5 miles. During the first 3 do the best you can and look for orange trail markers. The bison trails merge and go off from the trail making it difficult to figure out which is which. Once you hit trees markers are on the trees. There isn't always an actual trail between markers so be on the lookout for them. The trail is better defined and marked once you really get into trees. I went to the lake and back and mileage was just over 21. Lots of bison on and near trail. Bears frequent this area

2 months ago

Beautiful trail and feels like you're in the back country after mile 2! Very flat and easy if you can make the distance. Start early and watch for muddy areas. Saw one bison and a white wolf! We were surprised about how few bison we saw.

Saturday, July 22, 2017

We started on this trail in Hayden Valley just after sunrise... the trail was foggy and wet but the sun soon burned through! We saw large herds of bison and ended up going off trail several times to avoid some that were in our path. Trail was flat and enjoyable and made for great pictures and wildlife sightings.

Sunday, May 28, 2017

Just did 6 miles out and back from the trailhead north of alum creek. There are plenty of parking spots across the four pullouts south of the Mary Mountain trailhead. Saw a dozen bison less than a 1/4 mile from the trail, and had to walk between three bison around mile 2. We did the hike in late May and the trail was really muddy (I nearly lost a shoe in mud) high winds around 30 miles per hour. Beautiful scenery but not a lot of animals besides the bison.

Friday, September 25, 2015

We did about 5mi of this trail from the Hayden Valley trail head. The trail is fairly flat and can get muddy if there has been rain. You can see lots of birds, hawks, and buffalo. You also get some nice views of distant geyser basins.

Tuesday, July 28, 2015

We did this as a day hike (start early). The scenery was simple in a beautiful way. Lots of large open meadows and some rolling hills as well as many bison eating off in the distance. We took a quick dip at the lake because it was hot. Was definitely worth hiking!!!

Wednesday, July 23, 2014

Because of all the tourist and traffic we desiderata at the last minute to do the trail. What a great choice We only went in several miles but we did not see one other hiker. Trail follows a perfect beautiful stream We felt like we were in another time. Great wildlife. We stumble across some awesome geysers that gave us our own viewing show. There was evidence of recent landslides and we spent time studying that. There are dangerous areas on the trail. When you see the white calcified ground be carful where you step. The ground is hollow and boiling water lurks just below so don't fall in you will die.

This was a most peaceful hike we loved it

Monday, May 23, 2011

Very confusing trail because of the bison that have trampled the trail and caused us to take one of their paths instead of the actual trail. Besides that a very moderate very scenic hike through Hayden Valley. Be careful of backcountry mud pots!!!

Thursday, July 18, 2013

Wednesday, May 15, 2013