About Twin Falls

Twin Falls at Olallie State Park is one of the finest short waterfall hikes in the Seattle area. The trail descends into an old-growth gorge carved by the South Fork Snoqualmie River, where two waterfalls — an upper 50-foot plunge and a lower, wider cascade — roar through a narrow canyon of moss-covered basalt and ancient western red cedar.

A suspension bridge crossing the gorge provides a vertiginous view straight down the canyon and across to the upper falls. The contrast of the roaring water, the towering old-growth trees, and the volcanic basalt canyon walls is genuinely spectacular. The trail is well-maintained and the 2.6-mile round trip makes it accessible for families with older children.

Trail Highlights

• Two distinct waterfalls on the South Fork Snoqualmie — upper plunge and wide lower cascade
• Suspension bridge crossing the gorge with views straight down to the canyon floor
• Old-growth western red cedar forest on the canyon walls
• Close to Seattle — 45 minutes from downtown via I-90
• Excellent year-round hiking with spectacular winter moss and ice conditions

Trail Description

From the Twin Falls trailhead at Olallie State Park on SE 159th Street, follow the trail into the gorge. The path descends through old-growth cedar and fir, crossing a footbridge above the river before reaching the suspension bridge.

Cross the suspension bridge for the dramatic gorge view and continue to the upper falls viewpoint. The lower falls are visible from below the bridge. Return via the same trail.

Tips & What to Bring

• A Washington State Discover Pass is required for parking
• The suspension bridge is thrilling — secure children's hands on the crossing
• Waterproof boots are advisable — the trail is often muddy in the wet season
• Combine with Franklin Falls (nearby) for a full South Fork Snoqualmie waterfall day
• Visit in fall for spectacular big-leaf maple golden foliage in the gorge

Getting There

From North Bend, WA, take I-90 East to Exit 34. Turn right on 468th Ave SE and follow to SE 159th Street. Turn left and follow to the Twin Falls trailhead at Olallie State Park. GPS: 47.4817, -121.7017.