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out and back
Mount Si via Mount Si Trail is an out and back route covering 7.7 miles with 3,816 feet of elevation gain.
Plan on 4.75–6.75 hr of moving time.
Route geometry source: Openstreetmap · © OpenStreetMap contributors · Open Data Commons Open Database License (ODbL) 1.0 · View a source way · Retrieved Aug 5, 2026