Colorado · Rock climbing · Boulder

Across from The Bihedral aka Cascade Crag

25-route climbing area in Colorado with sport and trad options, 15 difficulty grades.

25 routes
5.3 – 5.11d
Sport · Trad

Is Across from The Bihedral aka Cascade Crag open right now?

Alert in the area

The Forest Service lists 3 alerts for Arapaho and Roosevelt National Forests.

As of · Source: USFS · Arapaho and Roosevelt National Forests. Agencies don't list every closure — check before you go.

Best time to visit Across from The Bihedral aka Cascade 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.

  1. Jan

    39° / 17°

    5 wet

  2. Feb

    40° / 17°

    5 wet

  3. Mar

    47° / 22°

    6 wet

  4. Apr

    52° / 27°

    8 wet

  5. May

    61° / 35°

    10 wet

  6. Jun

    73° / 44°

    9 wet

  7. Jul

    79° / 50°

    10 wet

  8. Aug

    77° / 48°

    11 wet

  9. Sep

    70° / 41°

    8 wet

  10. Oct

    57° / 31°

    6 wet

  11. Nov

    47° / 24°

    5 wet

  12. 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 1,200 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.

Across from The Bihedral, also known as Cascade Crag, is a climbing area in the Boulder Ranger District of the Arapaho and Roosevelt National Forests in Colorado. The Forest Service manages the land. 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 sit in the low 40s. That station sits about 1,200 feet lower than the crag, so temperatures here run cooler. The Bihedral Area and Sherwood Boulder both lie about 0.1 mile away. The Hawkins Surguine Spur Trail is roughly 1.4 miles off, and Winiger Ridge campground is about 3.9 miles away.

Routes (25)

ThunderheadFA: Ed Ash in the '80s, bolted by Ron Olsen, Bob D'Antonio, Bruno Haché, 20095.10HustleFA: Ed Ash in the ,80s. Bolted by Bruno Haché, 20095.10+FirestarterFA: Ed Ash in the '80s, bolted by Bob D'Antonio, Ron Olsen, 20095.10aRespectFA: Ed Ash? bolted by Bruno Haché, Eric Schmeer, Ron Olsen, Tom Woods, 20095.10aSpookedFA: Ed Ash? bolted by Bruno Haché, Ron Olsen, Bill Henson, Tom Woods, Billy Woods, 20095.10aErikaFA: Ed Ash in the '80s, bolted by Ron Olsen, Bruno Haché, 20095.10bFire and RainFA: Ed Ash in the '80s, bolted by Ron Solsen, Bruno Haché, Tom Woods, 20095.10bSmallvilleFA: Ed Ash in the '80s, bolted by Ron Olsen, Bob D'Antonio, 20095.10bQuick SilverFA: Ed Ash in the '80s, bolted by Ron Olsen, Bruno Haché, 20095.10cRain Delay (Whodathunkit, led prior to the bolts)FA: Ed Ash in the '80s, led by Alan Light, on gear, 2000s, bolted by Bob D'Antonio, Ron Olsen, Greg Hand 2009.5.10cOff the GridFA: that Guy...5.10dLightning StrikeFA: Ed Ash in the '80s, bolted by Ron Olsen, Bob D'Antonio, Greg Hand, 20095.11a/bFull RespectFA: Ed Ash, bolted by Bruno Hache, 20095.11dDexterFA: Ed Ash? energized bolter(s)?5.3Nurse JackieFA: Ed Ash? energized bolter(s)?5.5CalifornicationFA: Ed Ash in the '80s, bolted by Ron Olsen, Tanya Clement, Brad Clement, 20095.7WeedsFA: Ed Ash in the '80s, bolted by Ron Olsen, Bruno Haché, 20095.7FriendsFA: Ed Ash?, bolted by Ron Olsen, Bob D'Antonio, 20095.8ReunionFA: Ed Ash in the '80s, bolted by Ron Olsen, Lora Woods, Bill Henson, 20095.8Side DishFA: Ed Ash in the 80s. Bolted by Bruno Haché, Lora Woods, 20095.8Rain CheckFA: Ed Ash in the '80s, bolted by Ron Olsen, Tom Woods, Billy Woods, Bob D'Antonio, Bruno Haché, Lora Woods, 20095.8+Lichenthrope aka Good Clean FunFA: Ed Ash in the '80s, Kyle Copeland? Bolted by Ron Olsen, Tom Woods, 20095.9Crack Where the Sun Don't Shine (retrobolted as Rain Check)FA: Leo Paik, Eric Chrisman5.9-LoyaltyFA: Ed Ash in the '80s, bolted by Bruno Haché, Ron Olsen, 20095.9-Summer NightsFA: Ed Ash in the '80s, bolted by Ron Olsen, Tom Woods, Douglas Woods, 20095.9-