AMBLEWAY Wildest hikes
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Mount Hyak–Mirror Lake, 8 lakes

14.5 mi · ▲ 3,861 ft · 6 hr 46 min

Mount Hyak–Mirror Lake, 8 lakes is a 14.5-mile out-and-back near Snoqualmie Pass, WA. The route passes Mirror Lake, Tinkham Tarns, Windy Pass and 2 more before reaching Mount Hyak at the turnaround, 7.2 miles in. It climbs 3,861 ft, with sections as steep as 24% grade, and is mostly dirt. It scores 55/100 on the Ambleway Wildness scale: backcountry feel.

Elevation

0 mi3,232 – 4,564 ft · steepest grade: 24%15.2 mi

Getting there

Trailhead: Forest Road 5480 47.34600, -121.42442
Nearest town Snoqualmie Pass, WA
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Directions

AMBLEWAYwww.ambleway.com

Mount Hyak–Mirror Lake, 8 lakes

14.5 mi · ▲ 3,861 ft · 6 hr 46 min

Elevation 3,233–4,565 ft

Out & Back

Trailhead: Forest Road 5480 · 47.34600, -121.42442

Weather Aug 3: Clear, high 67°F / low 44° · precip 1% · wind 7 mph · sunrise 5:47 AM · sunset 8:38 PM

Parking lot at the trailhead

  1. Start on Mirror Lake Trail, heading NW.
  2. 0.8 miSharp right onto Pacific Crest Trail, heading NE.
  3. 50 ftPass Mirror Lake.
  4. 0.9 miPass Tinkham Tarns.
  5. 2.2 miPass Windy Pass.
  6. 0.5 miTurn left, heading N.
  7. 0.9 miContinue straight onto 9070-110, heading NE.
  8. 0.5 miPass Rockdale Lake.
  9. 250 ftBear left, heading NE.
  10. 0.3 miContinue straight onto Forest Road 9070-110, heading NE.
  11. 0.1 miPass Hyak Lake.
  12. 0.7 miTurn right, heading E.
  13. 250 ftBear left, heading E.
  14. 0.3 miReach Mount Hyak, then turn around and head back the way you came.
  15. 0.3 miBear right, heading NW.
  16. 0.9 miContinue straight onto 9070-110, heading NW.
  17. 0.3 miBear left, heading W.
  18. 0.5 miContinue straight onto Pacific Crest Trail, heading NW.
  19. 0.9 miTurn left, heading S.
  20. 3.5 miSharp left onto Mirror Lake Trail, heading SE.
  21. 0.7 miArrive back at the trailhead.

Each distance is the walk from the previous step. Tap a step for a map of its junction.

Trail map, photos and weather for this hike: www.ambleway.com/hikes/mount-hyak-tinkham-tarns-out-back-9-lakes-a18f

Trail surface

83% dirt1% gravel16% unspecified

Weather

ClearTemperature 67°F44°
Precip1%Wind7 mphUV7Humidity69%
Rained 0.1″ 2 days ago
Hourly temperature
70°40°
Sunrise 5:47 AM12 AM3 AM9 AM12 PM3 PM6 PMSunset 8:38 PM
Tue 74°55°
Wed 80°57°
Thu 80°54°
Fri 71°47°
Sat 70°45°
Sun 71°44°

Good to know

  • Parking lot at the trailhead

Other ways to reach this destination

More from Forest Road 5480 Trailhead

Hikes near Snoqualmie Pass, Washington