Washington · Rock climbing · Skykomish

420 Zone

420 Zone in Washington has 11 bouldering routes across 6 grades.

11 routes
V2 – V8
Bouldering

Is 420 Zone open right now?

Closure in the area

There's a closure order in Mt. Baker-Snoqualmie National Forest. It doesn't name 420 Zone, so check the source for the area it covers (2 listed).

As of · Source: USFS · Mt. Baker-Snoqualmie National Forest. Agencies don't list every closure — check before you go.

Best time to visit 420 Zone

Best months: July–September. 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° / 31°

    20 wet · 4 snow

  2. Feb

    47° / 32°

    17 wet · 2 snow

  3. Mar

    52° / 34°

    19 wet · 2 snow

  4. Apr

    59° / 38°

    18 wet

  5. May

    66° / 44°

    16 wet

  6. Jun

    69° / 48°

    13 wet

  7. Jul

    77° / 52°

    7 wet

  8. Aug

    77° / 52°

    7 wet

  9. Sep

    71° / 48°

    11 wet

  10. Oct

    58° / 41°

    16 wet

  11. Nov

    47° / 36°

    20 wet · 2 snow

  12. Dec

    41° / 32°

    20 wet · 5 snow

Typical high / low (°F) and days with rain or snow, 1991–2020. Measured at Baring, WA, 8.3 mi away at 770 ft. The station sits about 900 ft lower than this place, so expect it a little cooler here. Source: NOAA NCEI U.S. Climate Normals 1991–2020.

Closures we've recorded since August 2026

  • Campfire Ban in Effect Forest-wide

    Mt. Baker-Snoqualmie National Forest · Order dated July 21, 2026; seen Aug 23, 2026 → lifted Sep 15, 2026 · Forest Service

The 420 Zone is a bouldering area in the Skykomish Ranger District of Mt. Baker-Snoqualmie National Forest in Washington, managed by the Forest Service. It sits among several other climbing spots, with French Exit Boulder and Gavel Boulder each about 0.1 mile away. The area has 11 boulder problems, all rated on the V scale from V2 to V8. The median grade is V5, and the hardest route is Hail to the Chief at V8. The easiest is Lightning at V2. Summer is the most comfortable time to visit. Typical averages from a nearby weather station in Baring show July and August highs around 77°F with only about seven wet days a month, while winter brings highs in the low 40s and frequent snow days. Nearby, the West Fork Miller River offers canoeing about 1.6 miles away, and the Coney Basin Trail and Miller River Group Camp are both about 1.9 miles off.

Routes (11)

Diamond Engagement Boulder(1)

Diamond EngagementV6