Trail · Mount Si Natural Resources Conservation Area
Mount Si Old Trail
6.6 mi round trip3,458 ft gainHardDay hike: No permitOvernight: Designated sites
Get alerts for this hikePermits and reservations
Day hikeNo permit
No permit or reservation. Just the Discover Pass on your dashboard.
OvernightDesignated sites
Camp only at designated sites. Many DNR conservation areas do not allow overnight camping, so check the trailhead sign.
Washington DNR rules. Matched from trail managers on the map. Always confirm with the land manager before you go.
About the trail
Distance6.6 miRound trip, out and back
Elevation gain3,458 ftTotal climb, round trip
High point3,983 ftFrom elevation data
Overview
Mount Si Old Trail is a 6.6-mile round trip, out and back from Little Si Trailhead. The route follows Mount Si Old Trail.
Photos from hikers
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What you need
Parking and passes
This trailhead is on state land, so you need a Discover Pass on your dashboard.
Get a Discover PassGetting there
The hike starts at Little Si Trailhead. Save directions offline before you leave, since mountain roads often lose cell service.