Mount Tamalpais Watershed

Bon Tempe Lake–Concrete Pipe Road, 3 sights

3.7 mi · ▲ 588 ft · 1 hr 32 min

Bon Tempe Lake–Concrete Pipe Road, 3 sights is a 3.7-mile out-and-back in Mount Tamalpais Watershed near Fairfax, CA. The route reaches Bon Tempe Lake. It climbs 588 ft, with sections as steep as 24% grade, and is mostly dirt. It scores 78/100 on the Ambleway Wildness scale: genuinely wild.

Elevation

0 mi282 – 810 ft · steepest grade: 24%4.0 mi

Getting there

Trailhead: Alex Forman Trail 37.95340, -122.60080
Nearest town Fairfax, CA

Directions

AMBLEWAYwww.ambleway.com

Bon Tempe Lake–Concrete Pipe Road, 3 sights

3.7 mi · ▲ 588 ft · 1 hr 32 min

Elevation 283–810 ft

Out & Back · Mount Tamalpais Watershed

Trailhead: Alex Forman Trail · 37.95340, -122.60080

Weather Aug 3: Clear, high 94°F / low 56° · precip 0% · wind 0 mph · sunrise 6:16 AM · sunset 8:19 PM

Parking lot at the trailhead

  1. Start on Alex Forman Trail, heading N.
  2. 50 ftPass Bon Tempe Lake.
  3. 0.8 miBear right, heading N.
  4. 300 ftContinue straight onto Shaver Grade Road, heading N.
  5. 0.2 miBear right onto Elliot Trail, heading E.
  6. 0.3 miSharp right onto Shaver Grade Road, heading NE.
  7. 0.1 miContinue straight onto Concrete Pipe Road, heading S.
  8. 150 ftBear left onto Shaver Grade Road, heading SW.
  9. 0.4 miContinue straight onto Hidden Meadow Trail, heading NE.
  10. 150 ftReach Bon Tempe Lake, then turn around and head back the way you came.
  11. 100 ftContinue straight onto Shaver Grade Road, heading NE.
  12. 0.4 miBear right onto Concrete Pipe Road, heading NE.
  13. 150 ftContinue straight onto Shaver Grade Road, heading NW.
  14. 0.1 miSharp left onto Elliot Trail, heading W.
  15. 0.3 miBear left onto Shaver Grade Road, heading SW.
  16. 0.2 miBear left onto Alex Forman Trail, heading NW.
  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 surface

60% dirt40% unspecified

Weather

ClearTemperature 94°F56°
Precip0%Wind0 mphUV8Humidity36%
Hourly temperature
95°55°
Sunrise 6:16 AM12 AM3 AM9 AM12 PM3 PM6 PMSunset 8:19 PM
Tue 87°55°
Wed 82°52°
Thu 71°53°
Fri 74°51°
Sat 74°51°
Sun 67°51°

Good to know

  • Parking lot at the trailhead

Other ways to reach this destination

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