Trip report
Aug 22, 2025 — Buffalo Mountain is one of the more popular 12ers in Colorado due to its easy access from Silverthorne, short distance, and mostly straightforward trail to its summit. Located on the fringe of the Gore Range, Buffalo Mountain is more of a large lump and doesn’t represent the more jagged peaks for the range. The Buffalo Mountain Trailhead parking lot doesn’t support the high visitation for this trailhead, so I recommend getting there early since the residential roads leading to it do not allow shoulder parking.
The trail starts through a burned area before reaching a junction with the Buffalo Cabin Trail. Taking this leads deeper into the southern Gores, including Red Peak, but I hung left and continued along the Buffalo Mountain Trail and into the Eagles Nest Wilderness. Initially wide and flatter, the trail quickly reaches the base of the peak’s eastern slope and stated ascending more steeply. Wiggling up the slope, the trail had a couple of eroded sections and a couple of wide switchbacks through the trees. I was actually a little surprised at how steep this was for such a popular trail.
I emerged above treeline, marked by a substantial talus field. The trail leads through the boulders, introducing lots of Class 2 obstacles. Cairns helped keep to the intended trail, which is just a route that switchbacks through smaller boulders. It’s pretty easy to miss the correct trail since there are so many cairns and the switchbacks double back frequently. Missing the trail just might mean a more difficult move to overcome large boulders. After a few hundred feet, the trail reached a more prominent bulge forming an eastern ridge, and then wraps around more talus to enter a windswept rocky landscape dotted with little brush and not much else.
I-70 and the various mountain towns around Silverthorne stretched out below around Dillon Reservoir. A final push led up to the summit, some more light boulder-hopping on the way.