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Truman Trail - Pumice Plains

South Cascades > Mount St. Helens
46.2499, -122.1362 Map & Directions
Length
10.0 miles, roundtrip
Elevation Gain
1425 feet
Highest Point
4200 feet
Calculated Difficulty About Calculated Difficulty
Moderate/Hard
The pumice plains. Photo by RacingSnail. Full-size image
  • Mountain views
  • Wildlife
  • Lakes

Parking Pass/Entry Fee

Northwest Forest Pass

Get up close and personal with Mount St. Helens as you explore the northern flanks of the eruption site and meander through the unique ecology of the pumice plains. Continue reading

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Hiking Truman Trail - Pumice Plains

Get up close and personal with Mount St. Helens as you explore the northern flanks of the eruption site and meander through the unique ecology of the pumice plains.

The Truman Trail can be started at either end — by parking at the Windy Pass trailhead and heading west, or by parking at the Johnston Ridge Observatory and heading east past the Boundary Trail (though this itinerary will add a few more miles to your total).

Either way, your journey will take you through some of the most otherworldly scenery in all of Washington State.

After nearly four decades, the pumice plains are now teeming with life. It’s not unlikely that you’ll catch sight of mountain goats, elk and songbirds as you meander up and down the gentle moss-covered hills. From the north, you’ll welcome views of Spirit Lake and the Mount Margaret backcountry, while unobstructed views of Mount St. Helens encompass the south. If you look closely, you can spot a few research stations set up around the valley, too.

Note: Overnight camping is not allowed along the Truman Trail due to recovery efforts.

WTA worked here in 2019 and 2017!

Hike Description Written by
Rachel Wendling, WTA Staff

Truman Trail - Pumice Plains

Map & Directions

Trailhead
Co-ordinates: 46.2499, -122.1362 Open in Google Maps

Before You Go

See weather forecast

Parking Pass/Entry Fee

Northwest Forest Pass

WTA Pro Tip: Save a copy of our directions before you leave! App-based driving directions aren't always accurate and data connections may be unreliable as you drive to the trailhead.

Getting There

Starting at the town of Randle, drive south on Forest Road 25 past Iron Creek Falls to a junction with FR 99. At this junction, turn right onto FR 99. You will drive to the end of the road where the Windy Ridge trailhead is located.

More Hike Details

Trailhead

South Cascades > Mount St. Helens

Truman (#207)

Gifford Pinchot National Forest, Mount Adams Ranger District

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Truman Trail - Pumice Plains

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