Hyas Lake, Deception Pass Trailhead, Seattle: Alpine Lakes Wilderness - Snoqualmie Pass - Central Cascades, Washington

Hyas Lake - 4.0 miles

Deception Pass Trailhead

Hyas Lake (3,470')

Hyas Lake (3,470')

Round-Trip Length: 4.0 miles
Start-End Elevation: 3,350' – 3,470’ (3,470’ max elevation)
Elevation Change: +120’ net elevation gain (+120’ total roundtrip elevation gain)
Skill Level: Easy
Dogs Allowed: Yes
Bikes Allowed: No
Horses Allowed: Yes
Related Trails:

Hyas Lake - 4.0 Miles Round-Trip

Hyas Lake is located 2 miles from Deception Pass Trailhead in a wide berth of the upper Cle Elum River Valley. This short, level trail is ideal for families, runners and winter recreation, and the lake's long shore has numerous established campsites where fires are permitted:

Trail Map | Photo Gallery

The trail rises 100' to a stream crossing at the Alpine Lakes Wilderness Boundary (.4 miles : 3,458’), and continues through intervals of huckleberry, silver fir, hemlock and spruce to a large open marsh with views of Cathedral Rock (.6 miles : 3,470’).

The trail crosses another stream (1.0 miles : 3,474’) and remains level in mixed timber and a diverse understory to Hyas Lake (2.0 miles : 3,470’). It continues along the shore with easy access for anglers and to numerous campsites.

The main trail gradually rises away across side streams aided by boardwalks to Upper Hyas Lake (3.5 miles : 3,508'). It continues on much steeper grades and challenging terrain to Deception Pass, Tuck Lake and Robin Lakes.

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Interactive GPS Topo Map

Key GPS Coordinates - DATUM WGS84

  • N47 32.687 W121 05.861 — 0.0 miles: Deception Pass Trailhead - 3,350'
  • N47 32.969 W121 06.201 — 0.5 miles: Trail flattens after initial climb - 3,470'
  • N47 33.305 W121 06.436 — 1.0 miles: Flat, mixed forest with open areas - 3,474'
  • N47 33.640 W121 06.745 — 1.5 miles: Fast, level terrain - 3,484'
  • N47 33.993 W121 07.020 — 2.0 miles: Hyas Lake - 3,470'

Worth Noting

  • The wide, gentle path to Hyas Lake makes an excellent day hike or overnight destination for families with children. Campsites near the middle of the lake also make great picnic spots.
  • Native berries are abundant on this trail including thimbleberry, bunchberry, mountain ash and red and black huckleberry.

Camping and Backpacking Information

  • There are no fewer than 8 established campgrounds between Roslyn and the Deception Pass Trailhead.

  • From Roslyn to the road split at Salmon La Sac, find: Wish Poosh CG at 7.6 miles from the second circle (903 N.); Cle Elum River CG at 12.8 miles; Red Mountain CG at 14 miles; Cayuse Horse Camp at 16.5 miles; Salmon La Sac CG at 16.85 miles.

  • From the road split at Salmon La Sac to Deception Pass TH (on FR 4330), find: Scatter Creek CG at 9.3 miles; Tucquala Lake CG at 9.5 miles; Fish Lake CG at 10.5 miles.

  • Established campsites and a privy can be found along the shores of Hyas and Upper Hyas Lakes.

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

  • Campfires are permitted in fire rings at established campsites on Hyas and Upper Hyas 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 in the Alpine Lakes Wilderness.

Directions to Trailhead

The Deception Pass Trailhead is located 32 miles north of Exit 80 on I-90, 30 miles east of Snoqualmie Pass.

From I-90, exit 80 (Roslyn / Salmon La Sac) and turn left off the ramp. Drive 2.1 miles to a traffic circle, continue toward Roslyn and pass a sign for Suncadia resort before another circle at 2.8 miles.

Take 903 north, soon passing through the town of Roslyn where the road doglegs twice, followed by the tiny hamlet of Ronald. Around 8 miles from the second circle, 903 approaches the shore of Cle Elum Lake (reservoir). A number of campgrounds are available along this stretch of road before Salmon La Sac CG – see the Camping section, above.

At 16.5 miles, pass Cayuse Horse Camp where the road narrows and, a hundred yards beyond, splits. Go left at the split and continue another quarter mile for Salmon La Sac campground. Go right at the split (signed for Tucquala Lake) onto a steeply climbing dirt road (FR 4330) for Hyas Lake / Deception Pass. Continue on 4330 for 12.4 miles until the road ends at Deception Pass trailhead and parking area (just past Cathedral Pass TH).

The parking lot holds 25 cars, with overflow parking in the Cathedral Pass lot, which also has bathrooms. 

Contact Information

Okanogan-Wenatchee National Forest | Cle Elum Ranger District
803 W. 2nd Street
Cle Elum, WA 98922
509.852.1100
Reference Trail #1376.1

Trip Reports

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