Colorado · Rock climbing · Idaho Springs

Under Loch and Key Boulder

Under Loch and Key Boulder in Colorado has 5 bouldering routes across 4 grades.

Under Loch and Key BoulderPhoto: glennharper, CC BY-SA 2.0 (via Flickr)
5 routes
V3 – V6
Bouldering

Is Under Loch and Key Boulder 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 Under Loch and Key Boulder

Best months: June and 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

    32° / 12°

    8 wet

  2. Feb

    31° / 11°

    8 wet

  3. Mar

    38° / 17°

    9 wet

  4. Apr

    43° / 23°

    10 wet

  5. May

    53° / 31°

    9 wet

  6. Jun

    64° / 40°

    9 wet

  7. Jul

    69° / 46°

    13 wet

  8. Aug

    67° / 44°

    14 wet

  9. Sep

    61° / 38°

    10 wet

  10. Oct

    50° / 29°

    7 wet

  11. Nov

    39° / 19°

    7 wet

  12. Dec

    32° / 12°

    8 wet

Typical high / low (°F) and days with rain or snow, 1991–2020. Measured at Cabin Creek, CO, 12.7 mi away at 10,020 ft. The station sits about 1,500 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.

Under Loch and Key Boulder is a climbing area in the Clear Creek Ranger District of the Arapaho and Roosevelt National Forests in Colorado, managed by the Forest Service. It sits among several named climbing areas in this corner of the district, with Lower Ohman and Middle Ohman each about a tenth of a mile away. Summer is the most comfortable time to visit. Typical averages from a nearby weather station at Cabin Creek run to highs around 69°F in July and 67°F in August, with lows in the mid-40s. That station sits well below the area, so temperatures at the boulders run cooler. Other options are close by. James Peak South, a mountain biking area, is about half a mile off, and the James Peak Trail is roughly a mile away. Robbers Roost Campground is about 4 miles away.

Routes (5)

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Middle OhmanPhoto: glennharper, CC BY-SA 2.0 (via Flickr)

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