Fun slab on Guye Peak.jpg
Wilderness trespasser · CC BY-SA 4.0

Fall into the Wall–Source Lake, 3 lakes is a 9.7-mile out-and-back near Denny Creek, WA. The route passes Fall into the Wall and Red Pond before reaching Source Lake at the turnaround, 4.8 miles in. It climbs 4,147 ft, with sections as steep as 49% grade, and is mostly dirt. It scores 51/100 on the Ambleway Wildness scale: backcountry feel.

Elevation

0 mi2,894 – 4,620 ft · steepest grade: 49%10.0 mi

Getting there

Trailhead: Unnamed 47.42922, -121.42156
Nearest town Denny Creek, WA

Directions

AMBLEWAYwww.ambleway.com

Fall into the Wall–Source Lake, 3 lakes

9.7 mi · ▲ 4,147 ft · 5 hr 18 min

Elevation 2,895–4,621 ft

Out & Back

Trailhead: 47.42922, -121.42156

Weather Jul 17: Fog, high 65°F / low 51° · precip 4% · wind 6 mph · sunrise 5:27 AM · sunset 8:58 PM

Dogs allowed on leash · Transit-accessible: West Summit Shuttle Stop stop 626 m from the trailhead · Parking lot at the trailhead

  1. Start at the trailhead, heading NE.
  2. 50 ftPass Fall into the Wall.
  3. 0.7 miBear right, heading NE.
  4. 0.4 miBear left, heading N.
  5. 0.9 miPass Red Pond.
  6. 250 ftBear right onto Guye Peak Trail, heading W.
  7. 0.3 miTurn left onto Snoqualmie Mountain Trail, heading W.
  8. 2.2 miContinue straight onto Source Lake Trail, heading W.
  9. 0.3 miPass Source Lake.
  10. 350 ftReach Fall into the Wall, then turn around and head back the way you came.
  11. 0.4 miContinue straight onto Snow Lake Trail, heading E.
  12. 2.2 miTurn right onto Guye Peak Trail, heading N.
  13. 0.3 miBear left, heading SE.
  14. 1 miBear right, heading S.
  15. 0.4 miBear left, heading SW.
  16. 0.5 miArrive back at the trailhead.

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

Trail surface

78% dirt22% unspecified

Good to know

  • Dogs allowed on leash
  • Transit-accessible: West Summit Shuttle Stop stop 626 m from the trailhead
  • Parking lot at the trailhead

Weather

FogTemperature 65°F51°
Precip4%Wind6 mphUV8Humidity68%
Hourly temperature
65°50°
Sunrise 5:27 AM12 AM3 AM9 AM12 PM3 PM6 PMSunset 8:58 PM
Sat 66°49°
Sun 77°52°
Mon 88°55°
Tue 87°61°
Wed 85°62°
Thu 85°61°

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