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Routes
Road cycling routes
United States
California
San Mateo County
Redwood City

Crystal Springs Regional Trail Loop

Moderate

2.8

(6)

73

riders

Crystal Springs Regional Trail Loop

02:35

49.7km

430m

Road cycling

Cycle the moderate 30.9-mile Crystal Springs Regional Trail Loop, gaining 1419 feet of elevation with scenic reservoir views in San Mateo Co

Last updated: February 26, 2026

Waypoints

A

Start point

Bus stop

Get Directions

1

32 m

Redwood City — CalTrans Station

Highlight • Rest Area

You can start or end your ride here and then catch a train to your next spot. There are a number of restaurants nearby if you need to grab something to eat.

Tip by

2

8.80 km

Hillsdale fountain plaza

Highlight • Monument

A good meeting or ending point for a ride. A brewery, burger joint and other things all right here, by a CalTrain stop in SM.

Tip by

3

20.0 km

Milbrae downtown — Camino Real

Highlight • Settlement

The stretch of El Camino Real through downtown Milbrae is an area of focus for repurposing some of the 6 lanes for more cycle, pedestrian, and business traffic. The goal …

Tip by

4

24.0 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

5

32.6 km

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

6

36.1 km

Bike Sunday - no motorized vehicles on Sundays, we've got the whole road for ourselves.

Tip by

B

49.7 km

End point

Bus stop

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Way Types & Surfaces

Way Types

36.2 km

11.1 km

1.83 km

578 m

< 100 m

Surfaces

49.1 km

682 m

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Elevation

Elevation

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

Highest point (180 m)

Lowest point (0 m)

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Weather

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Today

Thursday 9 July

23°C

12°C

0 %

Additional weather tips

Max wind speed: 21.0 km/h

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Frequently Asked Questions

Where are the best parking and access points for this loop?

The Crystal Springs Regional Trail has multiple access points along its length. You'll find picnic areas and restrooms at various locations, making it convenient to start your ride. Specific parking details can vary, so it's always a good idea to check local signage upon arrival.

Is the Crystal Springs Regional Trail Loop dog-friendly?

The provided information does not specify the dog policy for the Crystal Springs Regional Trail. It's best to check the official park regulations or local signage before bringing your dog.

What is the best time of year to cycle this route?

The trail can be enjoyed year-round, but conditions vary. You might experience fog rolling through the landscape, adding to the scenic beauty. For a unique experience, consider cycling during "Bicycle Sunday" when a segment of Cañada Road, parallel to the trail, is closed to vehicle traffic, offering a more relaxed ride.

Are there any permits or entrance fees required for the Crystal Springs Regional Trail?

The provided information does not indicate any specific permits or entrance fees for accessing the Crystal Springs Regional Trail itself. However, it's always wise to check for any updated local regulations before your visit.

Are there any specific sections of the trail I should be aware of when road cycling?

Yes, road cyclists should be aware of a 0.6-mile section within the northern San Andreas segment that has a steeper grade and a narrow gravel surface, which is not recommended for road bikes. For this part, it's advised to use an alternate route via Skyline Boulevard. The southernmost Crystal Springs segment is also unpaved dirt, so road cyclists should use the wide bike lanes of parallel Cañada Road instead.

What is the terrain like for road cycling on this loop?

The terrain varies. The northern San Andreas and middle Sawyer Camp segments are predominantly wide, paved, and feature gentle, rolling inclines, making them suitable for most road cyclists. The Sawyer Camp segment is particularly easy with minimal elevation change. However, as mentioned, there are specific unpaved sections where road bikes are not recommended, requiring detours onto parallel roads.

What notable landmarks or scenic viewpoints can I expect to see along the way?

You'll encounter several points of interest. These include the historic Jepson Laurel, the neoclassical Pulgas Water Temple, and the Crystal Springs Dam Bridge. You'll also enjoy continuous views along the shoreline of the Lower Crystal Springs Reservoir and San Andreas Lake, with a notable View of Crystal Springs Reservoir from Cañada Road.

What kind of wildlife or natural scenery will I encounter?

The trail passes through diverse habitats including serpentine grasslands, coastal scrub, and forests with old-growth Douglas fir, oak, and bay trees. Wildlife sightings are common, with deer, squirrels, coyotes, bobcats, and a variety of birds frequently observed. The route separates urban areas from the 23,000-acre Peninsula Watershed, offering a tranquil natural setting.

Does this route connect with other trails?

Yes, the route incorporates sections of several other trails. Notably, it follows parts of the San Mateo North South Bicycle Route, the Crystal Springs Regional Trail itself, and the Sawyer Camp Trail. You'll also find smaller segments of trails like the Burlingame Bicycle Routes and the Peninsula Bikeway.

Are there restrooms or water stops available on the trail?

Yes, the trail is well-equipped with facilities. Multiple access points, picnic areas, and restrooms are available along the trail. The Pulgas Water Temple also features a natural spring for refilling water bottles, which is a convenient stop.

Is this loop suitable for family cycling?

The paved segments, particularly the Sawyer Camp section with its gentle grades and 15 mph speed limit, are generally suitable for families. However, be mindful of the unpaved sections and the specific gravel segment in San Andreas that road bikes should avoid. "Bicycle Sunday" on Cañada Road offers a very family-friendly, car-free cycling environment.

Is there a speed limit on the trail?

Yes, a 15 mph speed limit is enforced on the trail, especially on the popular Sawyer Camp section. This is to ensure safety for all users, including cyclists, joggers, and walkers.

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