Wellesley & Sentinel Peaks

Near the aptly named Thousand Acre Meadows are the enjoyable scrambles of Wellesley Peak and Sentinel Peak. With respective rankings of 42nd and 47th highest in the Olympics, they are worthwhile destinations for the long approach to the Hayden Pass area.


The Dosewallips Road leaves US 101 north of Brinnon and travels to the temporary road closure (9.2 mi, 600 ft).


Travel the temporary trail around the road obstruction for ~0.5 mile (and a 200-foot elevation gain and loss) to rejoin the Dosewallips Road (645 ft). Hike the road passing the Lake Constance trail (4 mi, 1,450 ft) and reaching the end of the road and the Dosewallips Ranger Station (5.5 mi, 1,600 ft). Hike the Dosewallips River trail to Dose Forks (6.9 miles, 1,736 ft). Take the Main Fork Dosewalllips River trail north to reach a campsite near Camp Marion (13 mi, 3400 ft). The following day continue west towards Hayden Pass, passing Bear Camp (16.5 mi, 3850 ft) and the junction with the Lost Pass trail near Dose Meadow Camp (18.3 mi, 4450 ft). Continue towards Hayden Pass, but leave the trail at Camp Number Three (20.0 mi, 5300 ft) and head through meadows northeast to enter Thousand Acre Meadows.

Wellesley Peak (6,758 ft)

Traverse diagonally across the meadows as streams permit to the ridge overlooking Silt Creek. Follow this ridge easterly past an intervening northwest-southeast ridge to the southwest ridge of Wellesley Peak. Scramble along ridge about 0.5 mile to the top. Time: 4 hours up from Dose Meadows.

Sentinel Peak (6,592 ft)

From Hayden Pass (20.9 mi, 5,847 ft) scramble southeast up an easy talus ridge. Time: 2 hours up from Dose Meadows.


  • These scrambles are best done in five days.
  • Mileage: 42 mi on trail, 7 mi off trail, and 49 mi total
  • Elevation Gain : 5,250 feet on trail, 2,250 feet off trail, and 7,500 feet total
  • Camp near the junction with Gray Wolf Pass Trail to simplify a longer trip that includes Mount Deception.
  • Suitable Activities: Climbing, Scrambling
  • Climbing Category: Basic Alpine
  • Seasons: June, July, August, September
  • Weather: View weather forecast
  • Difficulty: Technical 3, Strenuous 5
  • Length: 49.0 mi
  • Elevation Gain: 7,500 ft
  • 6,758 ft
  • Land Manager: Olympic National Park
  • Parking Permit Required: National Park Entrance Fee
  • Recommended Party Size: 12
  • Maximum Party Size: 12
  • Maximum Route/Place Capacity: 12
  • USGS Wellesley Peak
  • USGS Mt Deception
  • USGS The Brothers
  • Green Trails Olympic Mountains East No. 168S
  • Custom Correct Brothers - Mt Anderson
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