Idaho · Rock climbing · Melba

Hairpin Boulders

Hairpin Boulders in Idaho offers 12 bouldering routes across 8 difficulty grades.

12 routes
V0 – V7
Bouldering

Best time to visit Hairpin Boulders

Best months: March–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

    42° / 26°

    9 wet

  2. Feb

    49° / 29°

    7 wet

  3. Mar

    59° / 36°

    8 wet

  4. Apr

    66° / 41°

    8 wet

  5. May

    75° / 50°

    8 wet

  6. Jun

    84° / 57°

    5 wet

  7. Jul

    95° / 65°

    2 wet

  8. Aug

    93° / 63°

    2 wet

  9. Sep

    83° / 53°

    3 wet

  10. Oct

    68° / 42°

    5 wet

  11. Nov

    52° / 31°

    7 wet

  12. Dec

    42° / 26°

    9 wet

Typical high / low (°F) and days with rain or snow, 1991–2020. Measured at Swan Falls Ph, ID, 0.5 mi away at 2,325 ft. This station doesn't record snowfall. Source: NOAA NCEI U.S. Climate Normals 1991–2020.

Hairpin Boulders is a bouldering area on Bureau of Land Management land in Idaho, within the Four Rivers Field Office. It sits among a cluster of other climbing spots, including the Bad Ass Boulder Area, Swan Falls and the Spice Girls Area, all within about a tenth of a mile. The area is known for its boulder problems, with 13 routes listed and grades ranging from V0- to V7. Spring and fall are the most comfortable times to visit. Typical averages from a nearby weather station run from highs around 75°F in May to about 68°F in October. July and August are the hottest months, with typical highs near 95°F. Winter lows typically sit in the mid-20s. The closest climbs are all within a short walk. The Dedication Point Interpretive Trail is about 2 miles away, and the Emigrant Trail is roughly 3.7 miles off. Anglers can head to Halverson Bar/Lake, about 6.5 miles away, and the Halverson Lake Trail is about 7.2 miles away.

Routes (12)

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Swan FallsPhoto: cifraser1, CC BY 2.0 (via Flickr)

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