Gravity Car Road & Hoo-Koo-E-Koo Fire Road via Old Railroad Grade Fire Road is a 3.7-mile out-and-back in Mount Tamalpais Watershed near Mill Valley, CA. It climbs 972 ft, with sections as steep as 24% grade. It scores 25/100 on the Ambleway Wildness scale: green fringe.
Elevation
0 mi909 – 1,440 ft · steepest grade: 24%4.0 mi
Getting there
Trailhead: Tamelpa Trail 37.91994, -122.56388
Nearest town Mill Valley, CA
Directions
AMBLEWAYwww.ambleway.com
Gravity Car Road & Hoo-Koo-E-Koo Fire Road via Old Railroad Grade Fire Road
3.7 mi · ▲ 972 ft · 1 hr 43 min
Elevation 910–1,442 ft
Out & Back · Mount Tamalpais Watershed
Trailhead: Tamelpa Trail · 37.91994, -122.56388
Weather Sep 20: sunrise 6:57 AM · sunset 7:12 PM
- Start on Tamelpa Trail, heading W.
- 0.3 miTurn left onto Hoo-Koo-E-Koo Fire Road, heading SW.
- 0.4 miSharp right onto Old Railroad Grade Fire Road, heading NW.
- 0.6 miTurn left onto Hogback Road, heading S.
- 0.3 miSharp right onto Matt Davis Trail, heading S.
- 50 ftTurn left onto Hogback Road, heading S.
- 0.2 miSharp left, heading SE.
- 250 ftTurn right onto Gravity Car Road, heading E.
- 450 ftReach Hoo-Koo-E-Koo Fire Road, then turn around and head back the way you came.
- 500 ftTurn left, heading SE.
- 250 ftSharp right onto Hogback Road, heading N.
- 0.2 miTurn right onto Matt Davis Trail, heading N.
- 50 ftSharp left onto Hogback Road, heading N.
- 0.3 miTurn right onto Old Railroad Grade Fire Road, heading N.
- 0.6 miSharp left onto Hoo-Koo-E-Koo Fire Road, heading N.
- 0.4 miTurn right onto Tamelpa Trail, heading N.
- 0.2 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
49% dirt23% gravel28% unspecified
Weather
Sunrise 6:57 AMSunset 7:12 PM
Other ways to reach this destination
- 2.1 mi · loop · via Old Railroad Grade Fire Road
- 2.8 mi · out & back · via Old Railroad Grade Fire Road
- 3 mi · loop · via Old Railroad Grade Fire Road
- 3.4 mi · loop · via Old Railroad Grade Fire Road
- 4.7 mi · out & back · via Old Railroad Grade Fire Road
- 5.2 mi · out & back · via Old Railroad Grade Fire Road
- 5.7 mi · out & back · via Old Railroad Grade Fire Road
- 5.8 mi · loop · via Old Railroad Grade Fire Road
More from Tamelpa Trail Trailhead
- Concrete Pipe Road–Eldridge Grade Fire Road, 6 sights 13 mi · ▲ 2,941 ft
- Camino Alto Fire Road–Corte Madera Ridge Fire Road, 5 sights 9.6 mi · ▲ 2,167 ft
- Old Railroad Grade Fire Road & Southern Marin Line Road via Blithedale Ridge Fire Road 4.2 mi · ▲ 950 ft
- Hoo-Koo-E-Koo Fire Road & Hoo-Koo-E-Koo Trail 3.2 mi · ▲ 630 ft
- Temelpa Viewpoint & Temelpa Trail 3.2 mi · ▲ 1,421 ft
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Hikes near Mill Valley, California