This event is in the past.It took place on March 8, 2026 at 1 Muir Woods Rd Parking.
Mountain SpotMountain SpotACTC Rides
At 1 Muir Woods Rd Parking
Mill Valley
Suffer beautifully on this lung-busting climb to a decommissioned Cold War radar tower. You'll grind up loose, technical pitches (expect some hike-a-bike) before earning sweeping Bay Area views from the summit of Mt. Umunhum.
Challenging climb
Mountain biking
Self-supported ride
Scenic summit
Tips
đźš—can join at Umunhum Trailhead to skip worst climbs
🥪bring a snack for the summit break
⛰️very steep sections, hike-a-bike likely
ACTC Rides
At 1 Muir Woods Rd Parking
Mill Valley
Mountain SpotMountain SpotSuffer beautifully on this lung-busting climb to a decommissioned Cold War radar tower. You'll grind up loose, technical pitches (expect some hike-a-bike) before earning sweeping Bay Area views from the summit of Mt. Umunhum.
Challenging climb
Mountain biking
Self-supported ride
Scenic summit
Tips
đźš—can join at Umunhum Trailhead to skip worst climbs
🥪bring a snack for the summit break
⛰️very steep sections, hike-a-bike likely
Make it an outing
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