Bat Lake & South Irrigation Lake via Tolt Pipeline Trail
16.1 mi · ▲ 1,414 ft · 6 hr 4 min
Bat Lake & South Irrigation Lake via Tolt Pipeline Trail is a 16.1-mile out-and-back near Hollywood, WA. The route passes South Irrigation Lake before reaching Bat Lake at the turnaround, 8.1 miles in. It climbs 1,414 ft, with sections as steep as 21% grade. It scores 25/100 on the Ambleway Wildness scale: green fringe.
Elevation
Getting there
Directions
Bat Lake & South Irrigation Lake via Tolt Pipeline Trail
16.1 mi · ▲ 1,414 ft · 6 hr 4 min
Elevation 19–566 ft
Out & Back
Trailhead: Woodinville Valley Trail · 47.73301, -122.14864
Weather Jul 18: Overcast, high 74°F / low 59° · precip 1% · wind 3 mph · sunrise 5:30 AM · sunset 9:01 PM
Toilets at the trailhead · Parking lot at the trailhead
- Start on Woodinville Valley Trail, heading E.
- 0.1 miTurn left onto Sammamish River Trail, heading N.
- 0.1 miBear right, heading NW.
- 250 ftSharp right onto Tolt Pipeline Trail, heading NW.
- 5.4 miTurn right, heading E.
- 0.6 miContinue straight onto Colin Creek Trail, heading SE.
- 0.3 miTurn left onto Redmond Ridge Trail, heading NE.
- 1.2 miPass South Irrigation Lake.
- 0.5 miReach Bat Lake, then turn around and head back the way you came.
- 1.6 miTurn right onto Colin Creek Trail, heading N.
- 0.9 miTurn left, heading W.
- 150 ftContinue straight onto Tolt Pipeline Trail, heading NW.
- 5.4 miSharp left, heading W.
- 250 ftBear left, heading W.
- 250 ftContinue straight onto Sammamish River Trail, heading W.
- 300 ftTurn right onto Woodinville Valley Trail, heading W.
- 50 ftArrive back at the trailhead.
Each distance is the walk from the previous step. Tap a step for a map of its junction.
Trail surface
Good to know
- Toilets at the trailhead
- Parking lot at the trailhead
Weather
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