4.4
(39)
543
riders
19
rides
Mountain biking around Millbrae offers access to extensive regional trail networks and diverse natural landscapes. While direct technical mountain bike trails within Millbrae are limited, the city serves as a gateway to prominent outdoor recreation areas. The region features the mostly paved Crystal Springs Regional Trail, which provides scenic views along lakes and through riparian woodlands. For more traditional mountain biking experiences, trails in nearby areas like Pacifica offer varied terrain, elevation gains, and technical sections.
Last updated: April 25, 2026
4.8
(14)
156
riders
24.3km
02:34
730m
730m
Hard mountain bike ride. Good fitness required. Advanced riding skills necessary. Some portions of the route may require you to push your bike.
4.8
(4)
109
riders
17.4km
01:57
560m
560m
Hard mountain bike ride. Good fitness required. Advanced riding skills necessary. Some portions of the route may require you to push your bike.

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5.0
(1)
27
riders
10.9km
01:06
390m
390m
Hard mountain bike ride. Good fitness required. Advanced riding skills necessary. Some portions of the route may require you to push your bike.
22
riders
5.65km
00:32
140m
140m
Easy mountain bike ride. Great for any fitness level. Suitable for all skill levels.
3.0
(2)
9
riders
25.0km
02:18
660m
660m
Moderate mountain bike ride. Good fitness required. Suitable for all skill levels.
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You can still see evidence of what used to be the Cold War-era radar targeting system of Nike anti-aircraft missiles; the missiles themselves were based on nearby Milagra Ridge.
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This isn't the sort of road you'd take a vehicle on, nowadays - but it's great for nontechnical mountain biking, and this high point gives you nice views over the surrounding hills.
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Nike Missile Sites were Cold War-era anti-aircraft missile sites in the United States, designed to defend against potential Soviet air attacks. This site was in place to San Francisco.
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From this spot on Old San Pedro Mountain Road, you get truly stunning, panoramic views of the Pacific Ocean and surrounding foothills and grasslands. This is a great spot to take in the view and catch your breath before continuing on your ride.
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Small beach with lots of rolling waves. It is a popular spot for surfers and families with stunning coastline views.
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Small beach with lots of rolling waves. It is a popular spot for surfers and families with stunning coastline views.
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This is a great spot to stop and take in the 360-degree views of the sprawling landscapes of the coastal meadows and the Pacific Ocean. Slightly to the north, you can see Bolinas Pt. in the distance.
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This junction offers fantastic panoramic views, including the Pacific Ocean, San Francisco Bay, the Marin Headlands, and Mount Diablo in the distance. The Farallon Islands can be seen on the western horizon on a clear sunny day.
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There are over 20 mountain bike trails around Millbrae, offering a range of experiences from easy rides to more challenging routes. The komoot community has explored these trails over 500 times.
While Millbrae itself offers limited technical mountain biking, it's a gateway to diverse terrain. You'll find mostly paved trails like the Crystal Springs Regional Trail for scenic rides, and more traditional mountain biking experiences with varied terrain, elevation gains, and technical sections in nearby areas like Pacifica.
Yes, there are several easy options. For a shorter, less strenuous ride, consider the Mountainbike loop from Pacifica, which is just under 3 miles with moderate elevation gain. The paved sections of the Crystal Springs Regional Trail also offer a gentle cycling experience.
For a more challenging ride with substantial elevation gain, head to nearby Pacifica. The Pacifica Pier β Devil's Slide loop from San Bruno is a difficult route covering over 31 miles with more than 1200 meters of ascent, offering a demanding workout and coastal views.
Absolutely. The Pacific to SF Bay Panorama loop from Pacifica is a popular choice, providing stunning panoramic views of both the Pacific Ocean and the San Francisco Bay. The Crystal Springs Regional Trail also offers scenic views of San Andreas Lake and Crystal Springs Reservoir.
Many trails offer access to beautiful natural features. Along the Crystal Springs Regional Trail, you can enjoy views of San Andreas Lake and Lower Crystal Springs Reservoir. In nearby areas, you might encounter coastal features like Gray Whale Cove State Beach or the unique Mori Point Summit Graffiti Bunkers.
Yes, many of the mountain bike trails in the region are designed as loops. For example, the Baquiano Trail β Sweeney Meadow Trail loop from Pacifica offers a varied terrain experience over 13 miles, perfect for a circular ride.
The trails around Millbrae are highly rated by the komoot community, with an average score of 4.3 stars from over 40 reviews. Riders often praise the diverse landscapes, from coastal paths with ocean views to serene routes alongside lakes and through riparian woodlands, as well as the variety of difficulty levels available.
Yes, the area offers family-friendly options. The paved sections of the Crystal Springs Regional Trail are particularly suitable for families, providing a safe and scenic environment for all ages. For slightly more adventurous families, some of the easier, shorter loops in Pacifica could also be considered.
Millbrae and the surrounding Bay Area generally offer pleasant mountain biking conditions year-round. Spring and fall provide mild temperatures and often clear skies, making them ideal. Winter can bring rain, which might make some unpaved trails muddy, but many days are still suitable for riding. Summers are typically dry and warm, especially inland.
While specific regulations can vary by park and trail segment, many regional parks in the Bay Area allow dogs on leash. It's always best to check the specific rules for each trail or park you plan to visit, as some natural preserves have stricter policies to protect wildlife.
Parking is generally available at various access points for the regional trails. For instance, the Crystal Springs Regional Trail has designated parking areas along its length. For trails in Pacifica, trailheads often have parking lots, though they can fill up on busy weekends. Always check specific trailhead information for the best parking options.


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