AMBLEWAY Wildest hikes

Gary Giacomini Open Space Preserve

Boulder Springs Trail–Caterpillar Trail, 3 sights

5.2 mi · ▲ 1,483 ft · 2 hr 28 min

Boulder Springs Trail–Caterpillar Trail, 3 sights is a 5.2-mile out-and-back in Gary Giacomini Open Space Preserve near Lagunitas, CA. It climbs 1,483 ft, with sections as steep as 33% grade. It scores 31/100 on the Ambleway Wildness scale: green fringe.

Elevation

0 mi302 – 1,211 ft · steepest grade: 33%5.3 mi

Getting there

Trailhead: Unnamed 38.01323, -122.69719
Nearest town Lagunitas, CA
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Directions

AMBLEWAYwww.ambleway.com

Boulder Springs Trail–Caterpillar Trail, 3 sights

5.2 mi · ▲ 1,483 ft · 2 hr 28 min

Elevation 302–1,209 ft

Out & Back · Gary Giacomini Open Space Preserve

Trailhead: 38.01323, -122.69719

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

Transit-accessible: Castro Street & Sir Francis Drake Boulevard stop 193 m from the trailhead

  1. Start at the trailhead, heading E.
  2. 0.5 miTurn left, heading SE.
  3. 0.1 miSharp right onto Caterpillar Trail, heading SW.
  4. 50 ftTurn left, heading SW.
  5. 0.1 miSharp left onto San Geronimo Ridge Road, heading E.
  6. 0.5 miTurn left onto Boulder Springs Trail, heading NE.
  7. 50 ftBear right onto San Geronimo Ridge Road, heading E.
  8. 0.4 miTurn left onto Manzanita Fire Road, heading E.
  9. 0.9 miReach Caterpillar Trail, then turn around and head back the way you came.
  10. 0.9 miTurn right onto San Geronimo Ridge Road, heading SW.
  11. 0.4 miBear left onto Boulder Springs Trail, heading SW.
  12. 50 ftTurn right onto San Geronimo Ridge Road, heading SW.
  13. 0.4 miSharp right, heading SW.
  14. 0.1 miTurn right onto Caterpillar Trail, heading N.
  15. 50 ftSharp left, heading N.
  16. 0.1 miTurn right, heading N.
  17. 0.5 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-3-sights-8-km-9dc6

Trail surface

12% dirt88% 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 (~51 min). Leave by 7:08 PM for the 8:19 PM sunset. Back at your car by 9:04 PM, after dark — bring a headlamp.

More sunset hikes nearby

Good to know

  • Transit-accessible: Castro Street & Sir Francis Drake Boulevard stop 193 m from the trailhead

Other ways to reach this destination

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Hikes near Lagunitas, California