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Ralston Bike Trail – San Andreas Lake loop from San Bruno

Ralston Bike Trail – San Andreas Lake loop from San Bruno

Moderate

4.9

(2644)

15,813

riders

Ralston Bike Trail – San Andreas Lake loop from San Bruno

02:16

47.0km

610m

Road cycling

Moderate road ride. Good fitness required. Mostly well-paved surfaces and easy to ride. The starting point of the route is accessible with public transport.

Last updated: July 15, 2026

Waypoints

Start point

Train Station

Get Directions

5.51 km

San Andrea's Lake View

Highlight • Viewpoint

Beautiful stretch of biking/walking path, relatively flat with a few short minor hills. The view of the lake is gorgeous!

Tip by

11.2 km

Margarita Ave viewpoint

Highlight • Viewpoint

Looking northeast down the hill, on a clear day you can see all the way out across San Francisco Bay to Mount Diablo.

Tip by

17.8 km

Flintstone House

Highlight • Structure

The unofficial Bay Area landmark known as the Flintstone House in Hillsborough, about 17 miles south of San Francisco can be seen from the garden side when driving along Interstate …

Tip by

24.3 km

Ralston Bike Trail

Highlight (Segment) • Cycleway

The Ralston Bike Trail is a paved path connecting the Belmont community to the Crystal Springs Trail. Stretching one mile, it runs from the Ralston Avenue interchange at Highway 92, …

Tip by

28.6 km

Lower Crystal Springs Reservoir

Highlight • Lake

The 15-mile Crystal Springs Regional Trail is one of the best mostly paved bike trails with few cars in the Bay Area. It spans from San Bruno to Woodside and …

Tip by

31.9 km

Lower Crystal Springs Reservoir

Highlight • Lake

Lower Crystal Springs Reservoir is part of the Crystal Springs Reservoir system, and provides water to the San Francisco Bay Area. The area surrounding the reservoir is rich in biodiversity, …

Tip by

37.3 km

San Andreas Lake

Highlight • Lake

San Andreas Lake is a hidden gem tucked into the hills of San Mateo County, just south of San Francisco. Originally a natural sag pond formed by the San Andreas …

Tip by

38.2 km

San Andreas Lake

Highlight • Lake

This used to be a small, natural pond, but was expanded with the help of an earthwork dam that miraculously survived a famous earthquake in 1906 that more or less …

Tip by

47.0 km

End point

Train Station

Way Types & Surfaces

Way Types

30.5 km

7.37 km

7.30 km

1.62 km

134 m

< 100 m

Surfaces

45.7 km

1.15 km

135 m

Elevation

Nothing selected – click and drag below to see the stats for a specific part of the route.

Highest point (210 m)

Lowest point (10 m)

Weather

Today

Thursday 16 July

20°C

13°C

0 %

Additional weather tips

Max wind speed: 36.0 km/h

to get more detailed weather forecasts along your route

Comments

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Our route recommendations are based on thousands of hikes, rides, and runs completed by other people on komoot.

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Ralston Bike Trail – San Andreas Lake loop from San Bruno

San Andrea's Lake View

Margarita Ave viewpoint

Flintstone House

Ralston Bike Trail

Lower Crystal Springs Reservoir

Lower Crystal Springs Reservoir

San Andreas Lake

San Andreas Lake

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