Colorado · Rock climbing · Boulder

Canyon Block

Canyon Block in Colorado offers 10 climbing routes across 8 difficulty grades in mixed, sport, and trad styles.

10 routes
5.9+ – 5.13a
Trad · Mixed · Sport

Is Canyon Block 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 Canyon Block

Best months: April–June and September–October. 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

    47° / 21°

    6 wet

  2. Feb

    48° / 22°

    7 wet

  3. Mar

    57° / 29°

    8 wet

  4. Apr

    63° / 34°

    10 wet

  5. May

    71° / 43°

    12 wet

  6. Jun

    83° / 51°

    10 wet

  7. Jul

    88° / 57°

    11 wet

  8. Aug

    86° / 55°

    10 wet

  9. Sep

    79° / 48°

    8 wet

  10. Oct

    66° / 37°

    7 wet

  11. Nov

    54° / 28°

    6 wet

  12. Dec

    46° / 21°

    6 wet

Typical high / low (°F) and days with rain or snow, 1991–2020. Measured at Boulder, CO, 5.3 mi away at 5,484 ft. The station sits about 1,100 ft lower than this place, so expect it a little cooler here. This station doesn't record snowfall. Source: NOAA NCEI U.S. Climate Normals 1991–2020.

Canyon Block 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 within the Boulder Ranger District, about 5 miles from Boulder. The most comfortable months for a visit are typically late spring and early fall. Typical averages from a nearby weather station in Boulder show May highs around 71°F and September highs around 79°F, with July peaking near 88°F. That station sits roughly 1,000 feet lower than the climbing area, so temperatures at Canyon Block run cooler. Turtle Rock: A Crag for Kids and Brick Wall, The are both climbing areas about 0.1 mile away. Canyon Loop is a hike 1.5 miles off, and Winiger Ridge campground is about 3.9 miles away.

Routes (10)

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