Maryland · Rock climbing · Jarrettsville

Biceps Wall

Biceps WallPhoto: michaelwm25, CC BY 3.0 (via Wikimedia Commons)
6 routes
5.5 – 5.12b
Top Rope · Trad
Apr–Jun, Aug–Nov
best months

Biceps Wall is a climbing area in Maryland, about 0.1 mile from the village of Rocks. It sits alongside other climbing spots in the area, including Pinnacle, Titanic Area and Purple Trail Boulders, each also about 0.1 mile away. That makes it an easy addition to a day spent exploring the cluster of boulders and crags around town. For comfortable weather, late spring and early fall stand out. Typical averages from the nearby Conowingo Dam weather station show May highs around 74°F and September highs around 79°F. July is the warmest month there, with highs near 88°F. The station sits about 334 feet below the wall, so temperatures on the rock run a little cooler. The routes here range from 5.5 to 5.12b, with both trad and top-rope styles. The Crux and Beginner Flake are trad routes at 5.5 and 5.6, and Exhibition is a top-rope at 5.11b/c.

  • Best time to go · Apr–Jun, Aug–Nov

    Best time to visit Biceps Wall

    Best months: April–June and August–November. 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

      40° / 25°

      11 wet

    2. Feb

      43° / 26°

      10 wet

    3. Mar

      51° / 34°

      10 wet

    4. Apr

      64° / 44°

      10 wet

    5. May

      74° / 54°

      10 wet

    6. Jun

      83° / 64°

      9 wet

    7. Jul

      88° / 69°

      9 wet

    8. Aug

      85° / 67°

      9 wet

    9. Sep

      79° / 60°

      9 wet

    10. Oct

      67° / 48°

      9 wet

    11. Nov

      55° / 37°

      8 wet

    12. Dec

      45° / 31°

      10 wet

    Typical high / low (°F) and days with rain or snow, 1991–2020. Measured at Conowingo Dam, MD, 12.7 mi away at 40 ft. This station doesn't record snowfall. Source: NOAA NCEI U.S. Climate Normals 1991–2020.

Routes (6)