Improbability Drive
Mid-range climb in Ten Sleep Canyon's Hitchhiker's Guide sector.
- 5.10d
- grade
- Sport Bolted
- style
Is Improbability Drive open right now?
No closures listed
The Forest Service lists no closures for Bighorn National Forest.
As of · Source: USFS · Bighorn National Forest. Agencies don't list every closure — check before you go.
Best time to visit Improbability Drive
Best months: May–June and August–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
39° / 12°
5 wet · 5 snow
Feb
40° / 15°
5 wet · 5 snow
Mar
49° / 22°
7 wet · 5 snow
Apr
55° / 30°
9 wet · 3 snow
May
64° / 39°
12 wet · 1 snow
Jun
76° / 48°
10 wet
Jul
86° / 54°
7 wet
Aug
84° / 53°
6 wet
Sep
74° / 43°
6 wet
Oct
60° / 31°
6 wet · 2 snow
Nov
48° / 21°
5 wet · 4 snow
Dec
39° / 12°
4 wet · 4 snow
Typical high / low (°F) and days with rain or snow, 1991–2020. Measured at Billy Creek, WY, 27.7 mi away at 4,975 ft. The station sits about 1,500 ft lower than this place, so expect it a little cooler here. Source: NOAA NCEI U.S. Climate Normals 1991–2020.
One of eleven routes catalogued in the Hitchhiker's Guide sector at Ten Sleep Canyon, this climb sits in the middle of the crag's range from 5.8 to 5.11c.
Photo of the crag

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