Main Crag
Main Crag in Colorado has 20 climbing routes across 15 difficulty grades, featuring mixed, sport, and trad styles.
- 20 routes
- 5.7 – 5.12c
- Sport · Trad · Mixed
Is Main Crag open right now?
Alert in the area
The Forest Service lists 3 alerts for Arapaho and Roosevelt National Forests.
Fire Restrictions
Agency alert covering Arapaho and Roosevelt National Forests · USFS · Arapaho and Roosevelt National Forests
Caribou Road Closure Order
Agency alert covering Boulder Ranger District · Order 02-10-01-26-04 · USFS · Boulder Ranger District
Raptor Nesting Area Closure - Boulder Ranger District
Agency alert covering Boulder Ranger District · Order 02-10-01-26-06 · USFS · Boulder Ranger District
As of · Source: USFS · Arapaho and Roosevelt National Forests. Agencies don't list every closure — check before you go.
Best time to visit Main Crag
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
39° / 17°
5 wet
Feb
40° / 17°
5 wet
Mar
47° / 22°
6 wet
Apr
52° / 27°
8 wet
May
61° / 35°
10 wet
Jun
73° / 44°
9 wet
Jul
79° / 50°
10 wet
Aug
77° / 48°
11 wet
Sep
70° / 41°
8 wet
Oct
57° / 31°
6 wet
Nov
47° / 24°
5 wet
Dec
40° / 17°
5 wet
Typical high / low (°F) and days with rain or snow, 1991–2020. Measured at Gross Rsvr, CO, 5.6 mi away at 7,970 ft. The station sits about 700 ft higher than this place, so expect it a little warmer here. This station doesn't record snowfall. Source: NOAA NCEI U.S. Climate Normals 1991–2020.
Main Crag is a climbing area in the Boulder Ranger District of the Arapaho and Roosevelt National Forests in Colorado. It sits within the Boulder Ranger District, and the nearby Lower Right Side and Lookout, The climbing areas are each about 0.1 mile away. Summer is the most comfortable time to visit. Typical averages from a nearby weather station run to highs around 79°F in July with lows near 50°F, while winter highs stay near 40°F with lows in the teens. That station sits about 734 feet below the crag, so temperatures at the crag run a little cooler. The Hawkins Surguine Spur Trail is about 1.1 miles away, and the Hawkins Surguine Spur mountain bike route is about 1.4 miles away. For an overnight stay, Winiger Ridge and Gordon Gulch campgrounds are both within about 5 miles.
Routes (20)
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