Bon Tempe Lake via Alex Forman Trail is a 2.8-mile out-and-back in Mount Tamalpais Watershed near Fairfax, CA. The route reaches Bon Tempe Lake. It is mostly level, with 243 ft of elevation gain, and mostly dirt. It scores 76/100 on the Ambleway Wildness scale: genuinely wild.
Elevation
0 mi676 – 810 ft3.0 mi
Getting there
Trailhead: Bullfrog Fire Road 37.96638, -122.60510
Nearest town Fairfax, CA
Directions
AMBLEWAYwww.ambleway.com
Bon Tempe Lake via Alex Forman Trail
2.8 mi · ▲ 243 ft · 1 hr 3 min
Elevation 676–810 ft
Out & Back · Mount Tamalpais Watershed
Trailhead: Bullfrog Fire Road · 37.96638, -122.60510
Weather Aug 3: Clear, high 95°F / low 56° · precip 0% · wind 11 mph · sunrise 6:16 AM · sunset 8:19 PM
Toilets at the trailhead · Parking lot at the trailhead
- Start at the trailhead, heading NE.
- 150 ftTurn right onto Alex Forman Trail, heading SE.
- 0.3 miBear left onto Shaver Grade Road, heading E.
- 50 ftContinue straight onto Alex Forman Trail, heading E.
- 200 ftContinue straight onto Shaver Grade Road, heading SE.
- 50 ftContinue straight onto Alex Forman Trail, heading SE.
- 0.6 miPass Bon Tempe Lake.
- 0.2 miTurn right, heading SW.
- 300 ftSharp left, heading W.
- 0.2 miReach Bon Tempe Lake, then turn around and head back the way you came.
- 0.2 miSharp right, heading N.
- 0.8 miContinue straight onto Shaver Grade Road, heading W.
- 50 ftContinue straight onto Alex Forman Trail, heading NW.
- 200 ftContinue straight onto Shaver Grade Road, heading W.
- 50 ftBear right onto Alex Forman Trail, heading NW.
- 0.3 miTurn left, heading NW.
- 150 ftArrive back at the trailhead.
Each distance is the walk from the previous step. Tap a step for a map of its junction.
Trail surface
86% dirt14% unspecified
Weather
ClearTemperature 95°F56°
Precip0%Wind11 mphUV8Humidity42%
Hourly temperature
95°55°
Sunrise 6:16 AM12 AM3 AM9 AM12 PM3 PM6 PMSunset 8:19 PM
Tue
85°55°
Wed
81°51°
Thu
93°53°
Fri
98°54°
Sat
99°51°
Sun
93°52°
Good to know
- Toilets at the trailhead
- Parking lot at the trailhead
Other ways to reach this destination
More from Bullfrog Fire Road Trailhead
- Meadow Club Road 1.9 mi · ▲ 110 ft
- Alex Forman Trail 1.9 mi · ▲ 187 ft
- Alex Forman Trail–Canyon Trail Loop, 3 sights 2.2 mi · ▲ 329 ft
- Alex Forman Trail & Meadow Club Road 2.3 mi · ▲ 116 ft
- Moore Trail via Alex Forman Trail 3.3 mi · ▲ 749 ft
- Deer Park Fire Road via Alex Forman Trail 3.8 mi · ▲ 741 ft
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