AMBLEWAY Wildest hikes

Mount Tamalpais Watershed

Arturo Trail–Concrete Pipe Road, 11 sights

16 mi · ▲ 3,187 ft · 6 hr 56 min

Arturo Trail–Concrete Pipe Road, 11 sights is a 16-mile out-and-back in Mount Tamalpais Watershed near Fairfax, CA. It climbs 3,187 ft, with sections as steep as 35% grade, and is mostly dirt. It scores 70/100 on the Ambleway Wildness scale: backcountry feel.

Elevation

0 mi197 – 2,074 ft · steepest grade: 35%16.7 mi

Getting there

Trailhead: Bullfrog Fire Road 37.96638, -122.60510
Nearest town Fairfax, CA
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Directions

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Arturo Trail–Concrete Pipe Road, 11 sights

16 mi · ▲ 3,187 ft · 6 hr 56 min

Elevation 199–2,073 ft

Out & Back · Mount Tamalpais Watershed

Trailhead: Bullfrog Fire Road · 37.96638, -122.60510

Weather Aug 4: sunrise 6:17 AM · sunset 8:18 PM

Toilets at the trailhead · Parking lot at the trailhead

  1. Start at the trailhead, heading NE.
  2. 150 ftTurn right onto Alex Forman Trail, heading SE.
  3. 0.3 miBear left onto Shaver Grade Road, heading E.
  4. 50 ftContinue straight onto Alex Forman Trail, heading E.
  5. 200 ftContinue straight onto Shaver Grade Road, heading SE.
  6. 50 ftContinue straight onto Alex Forman Trail, heading SE.
  7. 150 ftSharp left, heading NE.
  8. 250 ftContinue straight onto Shaver Grade Road, heading N.
  9. 0.2 miBear right onto Elliot Trail, heading E.
  10. 0.3 miSharp right onto Shaver Grade Road, heading NE.
  11. 0.1 miContinue straight onto Concrete Pipe Road, heading S.
  12. 150 ftBear left onto Shaver Grade Road, heading SW.
  13. 0.4 miContinue straight onto Hidden Meadow Trail, heading E.
  14. 150 ftBear left onto Shaver Grade Road, heading NE.
  15. 0.4 miContinue straight onto Eldridge Grade Fire Road, heading SE.
  16. 0.7 miContinue straight onto Filter Plant Road, heading SE.
  17. 150 ftTurn left onto Eldridge Grade Fire Road, heading SE.
  18. 1.3 miContinue straight onto Lakeview Fire Road, heading SW.
  19. 0.2 miTurn left onto Pilot Knob Trail, heading NW.
  20. 50 ftTurn left onto Lakeview Fire Road, heading NW.
  21. 0.3 miTurn left onto East Peak Fire Trail, heading W.
  22. 1.1 miContinue straight onto Northside Trail, heading SE.
  23. 2 miBear right onto International Trail, heading SW.
  24. 50 ftBear left onto Northside Trail, heading SW.
  25. 0.6 miContinue straight onto Arturo Trail, heading S.
  26. 50 ftReach Shaver Grade Road, then turn around and head back the way you came.
  27. 50 ftContinue straight onto Northside Trail, heading S.
  28. 0.6 miBear right onto International Trail, heading NE.
  29. 50 ftBear left onto Northside Trail, heading NE.
  30. 2 miContinue straight onto East Peak Fire Trail, heading NE.
  31. 1 miTurn right onto Lakeview Fire Road, heading W.
  32. 0.3 miTurn right onto Pilot Knob Trail, heading W.
  33. 50 ftTurn right onto Lakeview Fire Road, heading W.
  34. 0.2 miContinue straight onto Eldridge Grade Fire Road, heading E.
  35. 1.3 miTurn right onto Filter Plant Road, heading SW.
  36. 150 ftContinue straight onto Eldridge Grade Fire Road, heading W.
  37. 0.7 miContinue straight onto Shaver Grade Road, heading NE.
  38. 0.4 miBear right onto Hidden Meadow Trail, heading NW.
  39. 100 ftContinue straight onto Shaver Grade Road, heading NW.
  40. 0.4 miBear right onto Concrete Pipe Road, heading NW.
  41. 150 ftContinue straight onto Shaver Grade Road, heading W.
  42. 0.1 miSharp left onto Elliot Trail, heading SW.
  43. 0.3 miBear left onto Shaver Grade Road, heading NW.
  44. 0.2 miSharp right onto Alex Forman Trail, heading SW.
  45. 100 ftContinue straight onto Shaver Grade Road, heading S.
  46. 50 ftContinue straight onto Alex Forman Trail, heading S.
  47. 200 ftContinue straight onto Shaver Grade Road, heading S.
  48. 50 ftBear right onto Alex Forman Trail, heading SW.
  49. 0.3 miTurn left, heading NW.
  50. 50 ftArrive 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/bon-tempe-lake-lake-lagunitas-out-back-4-lakes-17-km

Trail surface

66% dirt34% unspecified

Weather

Sunrise 6:17 AMSunset 8:18 PM

Sunset

The best sunset spot on this hike is 5.2 mi in (~185 min). Leave by 4:53 PM for the 8:18 PM sunset. Back at your car by 11:00 PM, after dark — bring a headlamp.

More sunset hikes nearby

Good to know

  • Toilets at the trailhead
  • Parking lot at the trailhead

Other ways to reach this destination

More from Bullfrog Fire Road Trailhead

Hikes near Fairfax, California