Seattle Trails

Seattle, WA: Mason Lake

This 6.2-mile out-and-back follows the new Ira Spring Memorial Trail, which winds for 3.2 miles above Snoqualmie Valley, ending at picturesque Mason Lake.

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Trail Facts

  • Distance: 5.2

Waypoints

MSL001

Location: 47.4242821, -121.5827026

Trail starts on abandoned road.

MSL002

Location: 47.4237975, -121.577121

Cross Mason Creek; look for small waterfalls. Continue straight bearing R @ junction with old unnamed trail.

MSL003

Location: 47.4184837, -121.5706177

Views of McClellan Butte and Mount Kent.

MSL004

Location: 47.4176331, -121.56707

L onto new Ira Spring Memorial Trail (trail leaves old roadbed).

MSL005

Location: 47.417984, -121.5626831

Cross large avalanche path.

MSL006

Location: 47.4203491, -121.5584488

Switchback skirts around huge talus slope.

MSL007

Location: 47.4186516, -121.5566635

L @ Bandera Mountain Trail.

MSL008

Location: 47.4219666, -121.557869

Cross ridgeline into Alpine Lakes Wilderness.

MSL009

Location: 47.4248009, -121.5550308

Lunch spot on Mason Lake shoreline; trail bears L toward more alpine lakes en route to Pratt Mountain and Mount Defiance ridge. Return to your car the way you came. Overnight option: Cross Mason Creek and walk 200 feet to an established campsite.