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Road cycling routes
United States
California
San Mateo County

San Bruno

The best road cycling routes around San Bruno

By Fede from komoot

Β·

Updated May 29, 2026

If you've ever tried to plan road cycling around San Bruno, you know how overwhelming the options can be. Sifting through countless routes to find the ones genuinely worth your time and effort can feel like a full-time job, and it's hard to tell the highlights from the filler. We get it – the last thing you want is to waste precious saddle time on a route that doesn't deliver.

That's where komoot comes in. Our community has mapped, ridden, and reviewed the best road cycling routes in San Bruno, so we've done the legwork for you. This guide is your curated shortlist, designed to save you the guesswork and point you straight to the rides that are truly worth your legs.

Road cycling in San Bruno offers a fantastic mix of terrain. You'll find everything from flat lowlands near the Bay to the rolling hills of San Bruno Mountain, with plenty of lake views and occasional bay vistas to keep things interesting. The region splits nicely into distinct zones, from the scenic San Andreas Lake area to the more challenging climbs of San Bruno Mountain State and County Park. Expect a range of difficulties, from easy spins to demanding ascents, and if you're here in spring, the wildflowers on San Bruno Mountain are a magnificent bonus.

If you only do one ride, we'd start with the San Andrea's Lake View – San Andreas Lake loop from San Bruno. It's a moderate 29.2 miles (47.0 km) that delivers extensive lake views and varied terrain, making it a local favourite. For something more challenging, the difficult Lake Merced – Twin Peaks - North/Eureka Peak loop from West Field Road, at 41.1 miles (66.1 km) with significant climbing, offers a rewarding workout and incredible panoramas. With over 2,100 road cyclists having explored San Bruno with komoot, you're in good company. Dive in and discover your next favourite ride!

If you only do 3 of these routes

  1. 1

    Ralston Bike Trail – San Andreas Lake loop from San Bruno
  2. 2

    Brisbane Lagoon – Point San Bruno Park loop from San Bruno Mountain State and County Park
  3. 3

    Pacifica Beach Boulevard North – Pacifica Pier loop from Milagra Ridge

Compare these routes at a glance

Trail

Distance

Elevation

Difficulty

Ralston Bike Trail – San Andreas Lake loop from San Bruno

47.0Β km

610Β m

Moderate

Brisbane Lagoon – Point San Bruno Park loop from San Bruno Mountain State and County Park

34.4Β km

270Β m

Easy

Pacifica Beach Boulevard North – Pacifica Pier loop from Milagra Ridge

19.9Β km

300Β m

Easy

Lake Merced Bike Path – Lake Merced loop from Judah Street & 19th Avenue

43.1Β km

700Β m

Moderate

San Andrea's Lake View – San Andreas Trail loop from San Bruno

17.2Β km

220Β m

Easy

Sneath Lane Trailhead – Sneath Lane Trail loop from Milagra Ridge

16.0Β km

360Β m

Moderate

Egg Rock β€” Devil's Slide – Gray Whale Cove State Beach loop from San Bruno

71.1Β km

1,010Β m

Hard

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1.

Ralston Bike Trail – San Andreas Lake loop from San Bruno

47.0km

02:16

610m

610m

Moderate road ride. Good fitness required. Mostly well-paved surfaces and easy to ride.

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Tips from the Community

Justis Reyes
June 5, 2026, Brisbane Lagoon

The road along the lagoon has wide cycle paths on both sides and low traffic into Oyster Park. It is however exposed to high winds so take care when riding. Smooth road right by the clear water in the shadow of Mt. Bruno make for a great bypass between SF and South SF that avoids the high traffic Bayshore Blvd and the hill.

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You could almost overlook it, but at the tip of the lake is also the official starting line for the tour.

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Nice section.

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The coastline is now being somewhat fortified.

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Wild coastline.

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Great view without fog.

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

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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, home to rare and endangered species like the San Mateo thornmint and the Marin Dwarf Flax. While recreational activities on the water are restricted to protect the watershed, the adjacent Crystal Springs Regional Trail offers scenic views for hikers and cyclists.

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Frequently Asked Questions

How many road cycling routes are available around San Bruno?

San Bruno offers a diverse network of over 10 road cycling routes. These routes cater to various skill levels, including easy, moderate, and challenging options, allowing cyclists to explore the region's unique topography.

Are there easy road cycling routes suitable for beginners in San Bruno?

Yes, San Bruno has several easy road cycling routes perfect for beginners. For instance, the San Andreas Lake – San Andrea's Lake View loop from San Bruno is an easy 9.2-mile (14.8 km) trail that offers pleasant lake vistas and can typically be completed in under an hour.

What kind of scenery can I expect on San Bruno's road cycling routes?

Road cycling around San Bruno is characterized by rolling hills and extensive lake views, particularly around San Andreas Lake and Lower Crystal Springs Reservoir. Many routes also provide occasional glimpses of the San Francisco Bay, offering a mix of natural landscapes and urban fringes.

What are the typical lengths and durations of road cycling loops in San Bruno?

The road cycling loops in San Bruno vary significantly in length and duration. You can find shorter routes like the San Andreas Lake – San Andrea's Lake View loop from San Bruno, which is about 9.2 miles (14.8 km) and takes around 42 minutes. Longer, more moderate routes, such as the San Andreas Lake – Oracle Lagoon loop from San Bruno, extend to about 37.4 miles (60.3 km) and can take nearly 3 hours to complete.

What do other road cyclists enjoy most about cycling in San Bruno?

The road cycling routes in San Bruno are highly rated by the komoot community, with an average score of 4.7 stars from over 55 reviews. Cyclists often praise the diverse terrain, the beautiful lake views, and the mix of gentle gradients with more challenging ascents, particularly around features like San Andreas Lake.

Are there challenging road cycling routes for experienced riders in San Bruno?

Yes, for experienced riders seeking a challenge, San Bruno offers routes with more significant elevation gains. While most routes are easy to moderate, there is at least one difficult route available, providing a good workout amidst the region's rolling hills.

What is the best time of year for road biking in San Bruno?

The San Bruno area generally enjoys mild weather, making road cycling enjoyable for much of the year. Spring and fall often provide ideal conditions with comfortable temperatures and less chance of extreme weather. Summer can be pleasant, though coastal fog might be present, while winters are typically mild but can bring rain.

Are there any notable landmarks or attractions along the road cycling routes?

Yes, several notable landmarks and natural attractions are accessible or visible from the road cycling routes. These include the scenic San Andreas Lake and Lower Crystal Springs Reservoir. You might also encounter parts of the Devil's Slide bikeway (old Hwy 1) or pass by San Bruno Mountain State & County Park.

Can I access San Bruno's road cycling routes using public transport?

San Bruno is well-served by public transportation, including BART and Caltrain, which can facilitate access to the general area. Many routes start or pass through areas that are reasonably close to public transport hubs, allowing cyclists to combine their ride with transit options. Check local transit schedules for specific bike-on-train policies.

Are there any road cycling routes that specifically offer bay views?

While many routes focus on lake views and rolling hills, some sections of San Bruno's road cycling network do offer occasional glimpses of the San Francisco Bay. These routes often traverse higher elevations or areas closer to the coastline, providing panoramic vistas of the bay.

Are there less crowded road cycling options in San Bruno?

To find less crowded road cycling options, consider exploring routes during off-peak hours, such as early mornings or weekdays. While popular routes like the San Andrea's Lake View – San Andreas Lake loop from San Bruno can see more traffic, the region's extensive network means you can often find quieter paths, especially on routes that venture further into natural landscapes away from main thoroughfares.

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