Olallie Lake, Talapus Lake Trailhead, Seattle - Alpine Lakes Wilderness - Snoqualmie Pass - Central Cascades, Washington

Olallie Lake - 6.2 miles

Talapus Lake Trailhead

Olallie Lake

Olallie Lake

Round-Trip Length: 6.2 miles
Start-End Elevation: 2,650' – 3,790’ (3,818’ max elevation)
Elevation Change: +1,140’ net elevation gain (+1,223’ total roundtrip elevation gain)
Skill Level: Easy-Moderate
Dogs Allowed: Yes
Bikes Allowed: No
Horses Allowed: No
Related Trails:

Olallie Lake - 6.2 Miles Round-Trip

Olallie Lake is located 3.1 miles from Talapus Creek Trailhead in the Alpine Lakes Wilderness. This moderate hike features diverse forests and a stop at Talapus Lake, with good fishing and camping options at each. The Talapus Creek Trail continues past Olallie Lake to Pratt Saddle, Pratt Lake and beyond via a junction with the Pratt Lake Trail (#1007):

Trail Map | Photo Gallery

The trail begins on gentle switchbacks lined by red huckleberry and numerous large stumps. An assortment of devil’s club, skunk cabbage, red alder, sword and bracken fern, vine maple and bunchberry fill out the diverse understory.

It climbs 400' on the first mile to Talapus Creek (1.2 miles), where grades steepen on eroded switchbacks above the water. Enjoy a splash pool on Talapus Creek before crossing the Alpine Lakes Wilderness Boundary into tall stands of silver fir (1.8 miles : 3,274').

Follow signs (right) for Talapus - Olallie Lakes where a faint spur splits left (1.86 miles : 3,285’), and cross several bridges over Talapus’ braided outlet to Talapus Lake (2.1 miles : 3,370’).

The trail continues on switchbacks through silver fir and hemlock that moderate to a trail junction for Olallie Lake (left), and east across the creek to Pratt Saddle (2.9 miles : 3,670’).

It crests through a mossy hemlock stand (3.3 miles : 3,811’) and dips to the west side of Olallie Lake (3.3 miles : 3,790’). Much of the shore is accessible, and lined by blueberry and huckleberry bushes that peak by mid-August. There’s a privy and numerous campsites at the lake.

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Interactive GPS Topo Map

Key GPS Coordinates - DATUM WGS84

  • N47 24.074 W121 31.091 — 0.0 miles: Talapus Lake Trailhead - 2,650'
  • N47 24.288 W121 31.035 — 0.6 miles: Trail ascends gently along wide trail - 2,870'
  • N47 24.451 W121 30.883 — 1.0 miles: Trail leading towards Talapus Creek - 3,071'
  • N47 24.640 W121 30.841 — 1.5 miles: Steep switchbacks near creek - 3,215'
  • N47 24.714 W121 30.893 — 1.9 miles: Cross series of bridges over outlet - 3,286'
  • N47 24.813 W121 30.979 — 2.1 miles: Talalpus Lake - 3,370'
  • N47 24.859 W121 30.812 — 2.5 miles: Steep climb from Talapus Lake then levels out - 3,515'
  • N47 25.095 W121 30.810 — 2.9 miles: Pratt Junction - 3,673'
  • N47 25.313 W121 30.748 — 3.4 miles: Olallie Lake - 3,790'

Worth Noting

  • Pacific Silver Firs are abundant on this trail. True firs are distinguishable from hemlocks and Douglas firs by their smooth, whitish-gray bark with resin blisters, and upward growing cones.
  • Many edible berries line this trail, including red and black huckleberries, blueberries, bunch berries and mountain ash berries. August is the best time for ripening huckleberries and blueberries.
  • Hunting is allowed in this area - wear bright colors during hunting season and ensure your dog is leashed.

Camping and Backpacking Information

  • Camping is permitted only at designated campsites within 1/2 mile of the following locations: Gem Lake, Gravel Lake, Island Lake, Lower Tuscohatchie Lake, Mason Lake, Melakwa Lake, Olallie Lake, Pratt Lake, Rainbow Lake, Snow Lake, Talapus Lake, and Williams Lake.

  • An overnight Wilderness permit must be filled out at the TH and carried to camp at Talapus and Olallie lakes. Group size max is 12.

  • Campfires are not permitted above 4,000’ east of the Cascade Crest; campfires are also prohibited within 1/2 mile of Lower Tuscohatchie, Mason, Olallie, Pratt and Talapus lakes.

Fishing Information

  • Fishing is allowed with a valid WA state fishing license.

  • Contact the Washington Department of Fish and Wildlife for more information.

  • wdfw.wa.gov/fishing/
Email: [email protected]
Sport | Commercial Licenses: 360.902.2434
Disability Licenses: 360.902.2460

Rules and Regulations

  • A Northwest Forest Pass or $5 fee is required at this trailhead.
  • A free day use or overnight Wilderness Permit must be filled out at the TH and carried for the duration of your trip in the Alpine Lakes Wilderness.
  • Dogs must be leashed at all times.
  • This trail is closed to stock.

Directions to Trailhead

The Talapus Lake Trailhead is located 6.4 miles from Exit 45 on I-90 west of Snoqualmie Pass.

From I-90, exit 45 and turn left onto FR 9030, cross under the freeway. Soon the pavement ends and after .4 miles, the road splits. Go right on 9031 and proceed another 2.3 miles to the Talapus Lake Trailhead.

The parking lot holds 20 cars, with overflow parking on the left side of the approach road; there are bathrooms. 

Contact Information

Mt Baker - Snoqualmie National Forest | Snoqualmie Ranger District
902 SE North Bend Way, Bldg 1
North Bend, WA 98045

Reference Trail #1039

Trip Reports

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