Massachusetts · Rock climbing · Medford

Slanted Boulder

19 routes
V0 – V8-9
Bouldering
Jun–Oct
best months

Slanted Boulder is a climbing area in Massachusetts, about a mile from the community of Malden Highlands. It sits among a cluster of boulders and crags, with Wright's Park and Theta Boulder each about 0.1 mile away and Woodland Road Boulder about 0.3 mile off. Highway Cliff is roughly half a mile away. Late spring and early fall are the most comfortable times to visit. Typical averages from a nearby weather station in Reading show May highs around 70°F and September highs around 75°F, while winter brings regular snow days from December through February. Hikers can pair a climbing session with Hemlock Pool Path, about half a mile away, or East Dam Road, about 0.6 mile away. Paddlers will find the Shawsheen River about 9 miles from the area.

  • Best time to go · Jun–Oct

    Best time to visit Slanted Boulder

    Best months: June–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

      38° / 19°

      12 wet · 8 snow

    2. Feb

      40° / 20°

      11 wet · 7 snow

    3. Mar

      48° / 27°

      13 wet · 6 snow

    4. Apr

      60° / 37°

      13 wet · 1 snow

    5. May

      70° / 47°

      13 wet

    6. Jun

      78° / 56°

      12 wet

    7. Jul

      84° / 63°

      11 wet

    8. Aug

      82° / 61°

      10 wet

    9. Sep

      75° / 53°

      9 wet

    10. Oct

      64° / 42°

      11 wet

    11. Nov

      53° / 32°

      11 wet · 2 snow

    12. Dec

      43° / 24°

      12 wet · 5 snow

    Typical high / low (°F) and days with rain or snow, 1991–2020. Measured at Reading, MA, 5.6 mi away at 110 ft. Source: NOAA NCEI U.S. Climate Normals 1991–2020.

Routes (19)

Keep exploring — more climbs worth the drive

Hemlock Pool at Middlesex FellsPhoto: Karlunun, CC BY-SA 4.0 (via Wikimedia Commons)

Hemlock Pool at Middlesex Fells

Next door

15 bouldering routes at Hemlock Pool in Massachusetts.

Painted BoulderPhoto: Karlunun, CC BY-SA 4.0 (via Wikimedia Commons)

Painted Boulder

Next door

Painted Boulder in Massachusetts has 5 bouldering routes across 3 grades.

The CovePhoto: Karlunun, CC BY-SA 4.0 (via Wikimedia Commons)

The Cove

~1 min drive

Cove, The in Massachusetts has 8 climbing routes on 6 difficulty grades.

Crag 3Photo: Karlunun, CC BY-SA 4.0 (via Wikimedia Commons)

Crag 3

~2 min drive

Crag 3 in Massachusetts has 5 routes with 4 difficulty grades, offering top-rope and trad climbing.

Fat ManPhoto: Karlunun, CC BY-SA 4.0 (via Wikimedia Commons)

Fat Man

~2 min drive

Accessible Massachusetts climbing area with varied routes for developing climbers.

Crag 54Photo: Karlunun, CC BY-SA 4.0 (via Wikimedia Commons)

Crag 54

~2 min drive

Crag 54 in Massachusetts has 8 routes with 6 difficulty grades, offering bouldering and top-rope climbing.

CLIMB

Wright's Park

Next door

Wright's Park in Massachusetts has 4 climbing routes on bouldering pads.

CLIMB

Theta Boulder

Next door

Theta Boulder in Massachusetts has 9 bouldering routes across 7 grades.

CLIMB

Woodland Road Boulder

Next door

5 bouldering routes in Massachusetts spanning 4 difficulty grades.

CLIMB

Highway Cliff

Next door

Highway Cliff in Massachusetts has 6 bouldering routes across 5 difficulty grades.