Idaho · Rock climbing · Almo

Marmot Boulder

Marmot Boulder in Idaho has 5 bouldering routes with 5 difficulty grades.

5 routes

V0 – V6

Bouldering

Is Marmot Boulder open right now?

No closures listed

The National Park Service lists no closures for City of Rocks National Reserve.

As of Oct 25, 1:00 pm MDT · Source: NPS · City of Rocks National Reserve. Agencies don't list every closure — check before you go.

Best time to visit Marmot Boulder

Best months: April–June and August–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.

Jan
35° / 16°
8 wet
Feb
39° / 19°
7 wet
Mar
48° / 27°
6 wet
Apr
55° / 33°
7 wet
May
65° / 41°
9 wet
Jun
75° / 50°
6 wet
Jul
86° / 59°
5 wet
Aug
85° / 57°
6 wet
Sep
74° / 48°
5 wet
Oct
60° / 35°
5 wet
Nov
45° / 24°
6 wet
Dec
35° / 17°
8 wet

Typical high / low (°F) and days with rain or snow, 1991–2020. Measured at Rosette, UT, 23.2 mi away at 5,685 ft. The station sits about 800 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.

Marmot Boulder is a bouldering area in City of Rocks National Reserve in Idaho, managed by the National Park Service. It sits among a cluster of climbing spots, with Demon Daze Boulder, Checkered Demon and Elephant Rock - North all about half a mile away. The area has five bouldering routes, all rated on the V scale from V0 to V6. The easiest is Gift of Life at V0, and the hardest is Spindler at V6. Circus Animals is at V5. The routes are all boulders, and the grade range runs from V0 to V6. For comfortable weather, aim for late spring or early fall. Typical averages from a nearby weather station in Rosette, Utah, show May highs around 65°F and September highs around 74°F, with July the warmest month at about 86°F. That station sits roughly 750 feet lower than the reserve, so temperatures at the boulders run a little cooler. Several other climbing areas and short hikes lie within a mile, including Flaming Rock Trail and Window Arch Trail - 250 feet.