Gary Giacomini Open Space Preserve
Kent Lake–Boulder Springs Trail, 6 sights
6 mi · ▲ 1,529 ft · 2 hr 46 min
Kent Lake–Boulder Springs Trail, 6 sights is a 6-mile out-and-back in Gary Giacomini Open Space Preserve near San Geronimo, CA. The route reaches Kent Lake at the turnaround, 3 miles in. It climbs 1,529 ft, with sections as steep as 18% grade. It scores 48/100 on the Ambleway Wildness scale: green fringe.
Elevation
Getting there
Directions
Kent Lake–Boulder Springs Trail, 6 sights
6 mi · ▲ 1,529 ft · 2 hr 46 min
Elevation 461–1,209 ft
Out & Back · Gary Giacomini Open Space Preserve
Trailhead: East Sylvestris Fire Road · 38.00969, -122.66698
Weather Aug 3: Clear, high 91°F / low 58° · precip 0% · wind 3 mph · sunrise 6:16 AM · sunset 8:19 PM
Transit-accessible: San Geronimo Valley Drive & Creamery Road stop 527 m from the trailhead
- Start on East Sylvestris Fire Road, heading SE.
- 1.2 miBear right onto San Geronimo Ridge Road, heading NW.
- 0.6 miBear left onto Boulder Springs Trail, heading SW.
- 50 ftTurn right onto San Geronimo Ridge Road, heading W.
- 0.5 miTurn left, heading W.
- 0.3 miTurn left onto Grassy Knoll Road, heading SW.
- 0.5 miReach Kent Lake, then turn around and head back the way you came.
- 0.5 miTurn right onto San Geronimo Ridge Road, heading NW.
- 0.3 miBear left, heading NE.
- 0.5 miTurn left onto Boulder Springs Trail, heading NE.
- 50 ftBear right onto San Geronimo Ridge Road, heading NE.
- 0.6 miBear left onto Hunt Camp Road, heading E.
- 1.1 miArrive back at the trailhead.
Each distance is the walk from the previous step. Tap a step for a map of its junction.
Trail surface
Weather
Sunset
The best sunset spot on this hike is 1.3 mi in (~53 min). Leave by 7:06 PM for the 8:19 PM sunset. Back at your car by 9:07 PM, after dark — bring a headlamp.
Good to know
- Transit-accessible: San Geronimo Valley Drive & Creamery Road stop 527 m from the trailhead
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