Massachusetts · Rock climbing · Chestnut Hill

Starbag Boulder

6 routes
V2 – V7-8
Bouldering
Apr–Oct
best months

Starbag Boulder is a bouldering area in Massachusetts, set within the Webster Conservation Area. It sits among a cluster of other climbing spots, with Temple Overhangs, Pusherman Wall and Cuba Boulder all about 0.1 mile away. The area is a compact, close-together collection of boulders, and the routes here are all bouldering grades, ranging from V2 to V7-8. The climbing is straightforward to get to, with several other boulders right next door. The routes are all bouldering, and the grade range runs from V2 up to V7-8, with the hardest of them, One, Two, Boom!, at V7-8. The other routes include Stellar Traverse at V2, A Page Out of Doug's Book at V3 and Nut Flexor at V3-4. For a change from the boulders, the Walking City Trail Section 3 is about 3.1 miles away, and the Charles River Greenway is about 3.2 miles away. The Sudbury Aqueduct Trail, a mountain biking route, is about 3.4 miles away.

  • Best time to go · Apr–Oct

    Best time to visit Starbag Boulder

    Best months: April–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

      37° / 19°

    2. Feb

      40° / 21°

    3. Mar

      47° / 28°

    4. Apr

      59° / 38°

    5. May

      69° / 48°

    6. Jun

      79° / 58°

    7. Jul

      85° / 64°

    8. Aug

      83° / 63°

    9. Sep

      75° / 55°

    10. Oct

      64° / 43°

    11. Nov

      53° / 34°

    12. Dec

      42° / 26°

    Typical high / low (°F) and days with rain or snow, 1991–2020. Measured at Jamaica Plain, MA, 3.1 mi away at 95 ft. This station doesn't record snowfall. Source: NOAA NCEI U.S. Climate Normals 1991–2020.

Routes (6)