nonprofit

Team Dirt

Corvallis’ IMBA mountain-bike chapter — builds and maintains the McDonald-Dunn, Alsea Falls, and Marys Peak trails through volunteer work parties and advocacy.

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Trail Work Parties

Team Dirt

Volunteer trail builds & maintenance — see calendar

📍 McDonald-Dunn, Alsea Falls & area trailheads

Beginner-friendlyFreeSummer

MTB⚠ Needs verification

Community Group Rides

Team Dirt

Seasonal chapter rides & events — see channels

📍 McDonald-Dunn Forest trailheads, Corvallis

Beginner-friendlyFreeSummer