Fs 631
- 1.1 mi
- round trip
- 616 ft
- climb
- Singletrack
- surface
- Out and back
- route
- May–Sep
- best months
Is Fs 631 open right now?
Closure in the area
There's a closure order in Bozeman Ranger District. It doesn't name Fs 631, so check the source for the area it covers (16 listed).
Sourdough/Bozeman Creek Trailhead and Trail Closure
Agency closure covering Bozeman Ranger District · Order 01-11-06-27-02 · USFS · Bozeman Ranger District
NFSR #1700 South Plateau Road Closure
Agency closure covering Custer Gallatin National Forest · USFS · Custer Gallatin National Forest
Storm Castle Creek Trail #185 Temporarily Closed Due to Storm Damage
Agency closure covering Bozeman Ranger District · Order 01-11-06-26-07 · USFS · Bozeman Ranger District
Hyalite Porcupine Buffalo Horn Summer Interim Travel Order and Map and Order # 01-11-00-26-02
Agency closure covering Custer Gallatin National Forest · Order 01-11-00-26-02 · USFS · Custer Gallatin National Forest
Hyalite Porcupine Buffalo Horn Winter Interim Travel Order and Map Order Number: #01-11-00-26-01
Agency closure covering Custer Gallatin National Forest · USFS · Custer Gallatin National Forest
As of · Source: USFS · Bozeman Ranger District. Agencies don't list every closure — check before you go.
Fs 631 is a short, easy mountain biking route in the Bozeman Ranger District of Custer Gallatin National Forest in Montana, about a mile from the district's boundaries. The Forest Service manages the land. The route is an out-and-back that covers about 2 miles, with a total climb of 616 feet from a low point of 5,874 feet to a high of 6,147 feet. The steepest stretch comes at about 0.85 miles in, with a grade of 11 percent. Summer is the most comfortable time to ride. Typical averages from a nearby weather station show July and August highs around 79°F with lows in the mid-40s, while winter highs stay near freezing. Several cross-country ski routes sit within half a mile, including Brackett Creek Trail and Going Out. Battle Ridge Cabin and the Lower Replica climbing area are both about 2 miles away.
Best time to go · May–Sep
Best time to visit Fs 631
Best months: May–September. 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
33° / 14°
5 wet
Feb
34° / 13°
5 wet
Mar
42° / 20°
7 wet
Apr
49° / 26°
9 wet
May
59° / 34°
11 wet
Jun
68° / 41°
11 wet
Jul
79° / 46°
8 wet
Aug
79° / 44°
6 wet
Sep
68° / 38°
6 wet
Oct
54° / 29°
6 wet
Nov
41° / 20°
6 wet
Dec
32° / 13°
5 wet
Typical high / low (°F) and days with rain or snow, 1991–2020. Measured at Wilsall 8 Ene, MT, 22.7 mi away at 5,865 ft. This station doesn't record snowfall. Source: NOAA NCEI U.S. Climate Normals 1991–2020.
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Map and trail data © OpenStreetMap contributors
