Fortification Mountain
- 6.0 mi
- round trip
- 931 ft
- climb
- 9,573 ft
- high point
- Out and back
- route
- Jun–Aug
- best months
Is Fortification Mountain open right now?
No closures listed
The Forest Service lists no closures for Bridger-Teton National Forest.
As of · Source: USFS · Bridger-Teton National Forest. Agencies don't list every closure — check before you go.
Fortification Mountain is a moderate out-and-back hike in Wyoming's Bridger-Teton National Forest, within the Pinedale Ranger District. The trail is about 6 miles long, with a one-way elevation gain of 931 feet, taking you from a low point of 8,666 feet to a high of 9,573 feet. The Forest Service manages the land, and the route is on natural surface, with horses and bikes both allowed. Summer is the most comfortable time to go. Typical averages from a nearby weather station run to highs around 72°F in July, with lows near 35°F. That station sits well below the summit, so temperatures up high run cooler. The trail is open from May 1 through October 31. Kelly Park Loop, a cross-country ski route, lies just 0.4 miles away, and Sweeny Creek is 0.5 miles off. Half Moon Lake Campground is 1.8 miles away, and the Trailhead Boulder climbing area is 2.1 miles away.
Local outfitters
- Yellowstone Trail RV Park10 mi away
Not on Roamze yet. Their page has how to reach them.
Best time to go · Jun–Aug
Best time to visit Fortification Mountain
Best months: June–August. Best months have typical highs of 55–85 °F, lows of 30 °F or warmer (32 °F where the station doesn't record snow), at most one snowy day and no more than 12 wet days.
Jan
26° / -6°
9 wet
Feb
29° / -4°
9 wet
Mar
36° / 5°
10 wet
Apr
43° / 16°
10 wet
May
54° / 26°
11 wet
Jun
64° / 32°
10 wet
Jul
72° / 35°
8 wet
Aug
71° / 34°
9 wet
Sep
62° / 28°
8 wet
Oct
48° / 19°
8 wet
Nov
35° / 6°
9 wet
Dec
25° / -5°
10 wet
Typical high / low (°F) and days with rain or snow, 1991–2020. Measured at Darwin Rch, WY, 37.8 mi away at 8,190 ft. The station sits about 1,400 ft lower than this place, so expect it a little cooler here. This station doesn't record snowfall. Source: NOAA NCEI U.S. Climate Normals 1991–2020.
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Photo: BLM_Wyoming — Public Domain Mark 1.0 (via Flickr)CCC Ponds Trail
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