Black Mountain – Arastradero Lake loop from Portola Valley
Black Mountain – Arastradero Lake loop from Portola Valley
4.5
(3571)
12,290
riders
03:59
48.2km
1,300m
Gravel riding
Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels. The starting point of the route is right next to a parking lot.
Last updated: March 17, 2026
Tips
Includes a segment in which cycling is not permitted
After 27.7 km for 75 m
Waypoints
Start point
Parking
Get Directions
18.8 km
Highlight • Summit
Tip by
24.8 km
Highlight (Segment) • Trail
Tip by
26.9 km
Highlight (Segment) • Trail
Tip by
27.6 km
Highlight • Summit
Tip by
27.8 km
Highlight (Segment) • Summit
Tip by
37.9 km
Highlight • Lake
Tip by
41.4 km
Enid Pearson-Arastradero Preserve
Nature Reserve
42.1 km
Highlight • Lake
Tip by
48.2 km
End point
Parking
Way Types & Surfaces
Way Types
17.8 km
17.5 km
6.86 km
3.19 km
2.66 km
175 m
Surfaces
23.8 km
20.3 km
2.73 km
1.05 km
341 m
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Elevation
Highest point (850 m)
Lowest point (120 m)
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Weather
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Today
Tuesday 19 May
29°C
13°C
0 %
Additional weather tips
Max wind speed: 11.0 km/h
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Our route recommendations are based on thousands of hikes, rides, and runs completed by other people on komoot.