The Bihedral (Upper Tier)
Bihedral (Upper Tier) in Colorado has 38 climbing routes.
- 38 routes
- 5.7 – 5.12b
- Sport · Mixed · Trad
Is Bihedral (Upper Tier), The 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 The Bihedral (Upper Tier)
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, 5.2 mi away at 7,970 ft. The station sits about 1,000 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.
The Bihedral (Upper Tier) is a climbing area in the Boulder Ranger District of the Arapaho and Roosevelt National Forests in Colorado, managed by the Forest Service. It sits in the upper tier of the Bihedral, a cluster of climbing areas that also includes the Lower Tier and Riviera, both about 0.1 mile away. Summer is the most comfortable time to visit. Typical averages from a nearby weather station show July highs around 79°F with lows near 50°F, while winter highs stay in the low 40s. That station sits about 1,000 feet below the Bihedral, so temperatures up high run cooler. The Hawkins Surguine Spur Trail is about 1.5 miles away, and Winiger Ridge campground is about 4 miles off. Gordon Gulch campground and Boulder Creek, a paddling spot, are both within about 5 miles.
Routes (38)
Keep exploring — more climbs worth the drive
The Riviera
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Riviera, The in Colorado has 21 climbing routes across 10 grades, offering mixed, sport, and trad styles.
The Left Side
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Left Side, The in Colorado has 8 climbing routes across 7 grades.
The Bihedral Area
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Bihedral Area is a bouldering crag in Colorado with 1 route.
Across from The Bihedral aka Cascade Crag
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25-route climbing area in Colorado with sport and trad options, 15 difficulty grades.
Hillbilly Rock 1
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Hillbilly Rock 1 in Colorado has 10 climbing routes ranging from sport to trad.
Sherwood Forest
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Sherwood Forest in Colorado has 12 climbing routes across 10 grades, offering sport and trad options.
Garden Party Wall
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Garden Party Wall in Colorado has 5 mixed and sport climbing routes ranging from moderate to hard difficulty.
Upper Security Risk
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Upper Security Risk in Colorado has 14 routes with sport and trad options.
Hillbilly Rock 3
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Hillbilly Rock 3 in Colorado has 5 sport climbing routes across 3 difficulty grades.
Truth or Consequences Crag aka Inca Stone
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Truth or Consequences Crag (Inca Stone) in Colorado has 13 routes across 10 grades with mixed, sport, and trad climbing.
