North Irrigation Lake via Tolt Pipeline Trail
16 mi · ▲ 1,445 ft · 6 hr 3 min
North Irrigation Lake via Tolt Pipeline Trail is a 16-mile out-and-back near Woodinville, WA. The route reaches North Irrigation Lake at the turnaround, 8 miles in. It climbs 1,445 ft, with sections as steep as 19% grade, and is mostly dirt. It scores 28/100 on the Ambleway Wildness scale: green fringe.
Elevation
Getting there
Directions
North Irrigation Lake via Tolt Pipeline Trail
16 mi · ▲ 1,445 ft · 6 hr 3 min
Elevation 29–553 ft
Out & Back
Trailhead: connector · 47.74764, -122.15947
Weather Jul 18: Overcast, high 74°F / low 59° · precip 1% · wind 3 mph · sunrise 5:30 AM · sunset 9:01 PM
Transit-accessible: NE 171st St & 133rd Ave NE stop 365 m from the trailhead
- Start at the trailhead, heading SW.
- 150 ftTurn left, heading SE.
- 0.4 miContinue straight onto Sammamish River Trail, heading SE.
- 0.4 miContinue straight onto Tolt Pipeline Trail, heading S.
- 5.4 miTurn right, heading E.
- 0.6 miContinue straight onto Colin Creek Trail, heading E.
- 0.7 miBear left onto Kari's Bog Trail, heading W.
- 0.6 miReach North Irrigation Lake, then turn around and head back the way you came.
- 0.6 miBear right onto Collin Creek Trail, heading NW.
- 0.5 miTurn left onto Colin Creek Trail, heading E.
- 0.7 miTurn left, heading NW.
- 150 ftContinue straight onto Tolt Pipeline Trail, heading NW.
- 5.4 miContinue straight onto Sammamish River Trail, heading W.
- 0.7 miTurn right, heading NW.
- 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
- Transit-accessible: NE 171st St & 133rd Ave NE stop 365 m from the trailhead
Weather
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