AMBLEWAY Wildest hikes

Gary Giacomini Open Space Preserve

Boulder Springs Trail–Caterpillar Trail, 4 sights

6.8 mi · ▲ 1,756 ft · 3 hr 9 min

Boulder Springs Trail–Caterpillar Trail, 4 sights is a 6.8-mile out-and-back in Gary Giacomini Open Space Preserve near Lagunitas, CA. It climbs 1,756 ft, with sections as steep as 28% grade, and is mostly dirt. It scores 36/100 on the Ambleway Wildness scale: green fringe.

Elevation

0 mi279 – 1,211 ft · steepest grade: 28%7.0 mi

Getting there

Trailhead: Unnamed 38.01156, -122.70020
Nearest town Lagunitas, CA
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Directions

AMBLEWAYwww.ambleway.com

Boulder Springs Trail–Caterpillar Trail, 4 sights

6.8 mi · ▲ 1,756 ft · 3 hr 9 min

Elevation 278–1,209 ft

Out & Back · Gary Giacomini Open Space Preserve

Trailhead: 38.01156, -122.70020

Weather Aug 3: Clear, high 88°F / low 58° · precip 0% · wind 4 mph · sunrise 6:16 AM · sunset 8:19 PM

Transit-accessible: Sir Francis Drake Boulevard & West Cintura Avenue stop 128 m from the trailhead

  1. Start at the trailhead, heading SE.
  2. 0.7 miSharp right onto Caterpillar Trail, heading SW.
  3. 50 ftTurn left, heading SW.
  4. 0.1 miSharp left onto San Geronimo Ridge Road, heading SE.
  5. 0.5 miTurn left onto Boulder Springs Trail, heading E.
  6. 50 ftBear right onto San Geronimo Ridge Road, heading NE.
  7. 0.6 miBear left onto Hunt Camp Road, heading E.
  8. 0.2 miTurn left onto Hunt Camp Trail, heading E.
  9. 1.3 miReach Caterpillar Trail, then turn around and head back the way you came.
  10. 1.4 miTurn right onto Hunt Camp Road, heading SE.
  11. 0.2 miBear right onto San Geronimo Ridge Road, heading W.
  12. 0.6 miBear left onto Boulder Springs Trail, heading W.
  13. 50 ftTurn right onto San Geronimo Ridge Road, heading W.
  14. 0.5 miSharp right, heading NW.
  15. 0.1 miTurn right onto Caterpillar Trail, heading SW.
  16. 50 ftSharp left, heading SW.
  17. 0.7 miArrive back at the trailhead.

Each distance is the walk from the previous step. Tap a step for a map of its junction.

Trail map, photos and weather for this hike: www.ambleway.com/hikes/boulder-springs-trail-caterpillar-trail-out-back-4-sights-11-km-2497

Trail surface

64% dirt36% unspecified

Weather

ClearTemperature 88°F58°
Precip0%Wind4 mphUV8Humidity64%
Hourly temperature
90°55°
Sunrise 6:16 AM12 AM3 AM9 AM12 PM3 PM6 PMSunset 8:19 PM
Tue 75°56°
Wed 72°55°
Thu 83°53°
Fri 88°52°
Sat 87°52°
Sun 82°52°

Sunset

The best sunset spot on this hike is 1.2 mi in (~52 min). Leave by 7:07 PM for the 8:19 PM sunset. Back at your car by 9:03 PM, after dark — bring a headlamp.

More sunset hikes nearby

Good to know

  • Transit-accessible: Sir Francis Drake Boulevard & West Cintura Avenue stop 128 m from the trailhead

Other ways to reach this destination

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Hikes near Lagunitas, California