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Seattle Trails

Seattle: Tumac Mountain

This 8-mile out-and-back to a pair of volcanic Cascades cones comes with dozens of colorful wildflower meadows and chilly alpine tarns.

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Trail Facts

  • Distance: 6.5

Waypoints

TUM001

Location: 46.7523994445801, -121.36164855957

Head SW on Trail 980; cross small creek on bridge and continue S

TUM002

Location: 46.7451210021973, -121.364562988281

Trail begins steep climb with views opening E toward Mt. Aix

TUM003

Location: 46.7381896972656, -121.36856842041

Arrive @ the first Twin Sisters Lake. Go L (R leads to second Twin Sisters Lake); ford outlet creek

TUM004

Location: 46.7333717346191, -121.364776611328

Turn R @ Y onto Tumac Mtn.’s Trail 44 and continue S

TUM005

Location: 46.7280731201172, -121.36075592041

Lush open meadows dotted with dozens of small tarns; wildflowers galore

TUM006

Location: 46.7207450866699, -121.357841491699

More meadows of flowers, and more ponds. Elk tracks follow trail

TUM007

Location: 46.7162666320801, -121.355674743652

SE views to Pear Butte. Hike through huckleber­ries in fall, and beargrass and avalanche lilies in early summer

TUM008

Location: 46.7135848999023, -121.353759765625

Steep trail up pumice slopes toward summit. Stay straight @ 3-way. Optional: Turn R on faint path to explore deep concentric circles of lower Tumac Mtn. crater

TUM009

Location: 46.7131690979004, -121.355766296387

Upper crater: Gaze into the lower crater before turning SE to summit

TUM010

Location: 46.7122764587402, -121.353065490723

Tumac Mtn. (6,340 ft.) offers fantastic 360° views of Goat Rocks Wilderness; Mts. Adams, St. Helens, and Rainier; and on superfine days, even the Stuart Range and Olympics. Return to trailhead

How to Pack for Backcountry Skiing

Get to know the winter safety gear you need in your pack.

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