5.0
(1)
58
riders
9
rides
Gravel biking around East San Gabriel features an extensive network of fire roads, mountain trails, and varied canyon landscapes. The region, located at the eastern edge of the Los Angeles Basin, offers a blend of mountainous environments and scenic routes. Riders can expect significant elevation gains across diverse terrain. The San Gabriel Mountains National Monument is a central feature, providing a wide array of options for cyclists.
Last updated: July 13, 2026
5.0
(1)
17
riders
46.7km
04:38
1,710m
1,710m
Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
11
riders
53.0km
03:51
1,060m
1,060m
Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.

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4
riders
32.8km
03:06
890m
890m
Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
5
riders
53.6km
04:51
1,460m
1,460m
Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
1
riders
66.0km
05:38
1,680m
1,680m
Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
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Short tunnel on the eastern slope below San Gabriel Peak, part of the old Mt Lowe Motorway, that was never paved. The tunnel is very short, so you don't have to worry about bringing light. The road continues to the trailhead half a mile uphill.
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Just below the Mt Wilson Trailhead on Red Box Road, this overlook and memorial is a perfect place to pause. Sit and take in sweeping views of the San Gabriel Valley, and read the memorial plaque honoring early conservation efforts.
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Henninger Flats sits along the road with views of Altadena. You’ll pass by it while climbing the Mt. Wilson Toll Road and can take a moment to catch your breath while enjoying the views. The route features a steady climb with minimal shade, so it’s best to start early, especially in summer. At the top, enjoy panoramic views of the San Gabriel Valley and explore the area, which includes a visitor center, picnic spots, and a tree nursery.
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There are lots of vintage shops and cafes in the historic downtown. Library Park is a great place to rest in the shade with a bite to eat before continuing your ride.
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This tunnel was blasted into existence in 1942 to form the old Mount Lowe Motorway.
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Old Town Monrovia is a 10‑block historic district centered on Myrtle Avenue, that has brick‑lined sidewalks, vintage lampposts, and boutique shops.
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Monrovia Recreation Park is 22 acres and has playgrounds, picnic shelters, and restrooms. It is a good spot for a break in the shade and some water.
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Gravel biking in East San Gabriel is characterized by its challenging terrain. The region's routes feature extensive fire roads, demanding mountain trails, and significant elevation gains, making them generally suitable for experienced riders. All 8 routes listed in this guide are rated as difficult.
The gravel biking routes in East San Gabriel are primarily challenging, with all 8 routes in this guide rated as difficult. Riders should be prepared for significant elevation gains and demanding terrain. There are no easy or moderate routes listed in this guide.
You can expect a diverse range of terrain, including extensive fire roads, demanding mountain trails, and varied canyon landscapes. The routes often feature significant elevation gains, with environments shifting from high alpine to canyon settings within a single ride. The Arroyo Seco Bike Trail – Verdugo Peak loop, for example, includes challenging gravel sections and substantial climbing.
Yes, East San Gabriel offers breathtaking mountain vistas and natural features. The San Gabriel Mountains National Monument is a central feature, providing diverse terrain. You can find picturesque spots like the Eaton Canyon Waterfall, a 40-foot waterfall accessible via a moderate hike from some routes. The Pasadena Historic City Hall – View from Mount Lukens loop offers considerable climbing and expansive views.
Absolutely. The region is rich in history. You can encounter landmarks like the Historic Colorado Street Bridge, a part of the iconic Route 66. The Mount Lowe Railway area also offers routes with historical value, featuring the ruins of the 19th-century resort complex on Echo Mountain, which you can explore near the Mount Lowe Railway Ruins highlight.
Yes, many of the gravel bike trails in East San Gabriel are designed as loops, offering a continuous riding experience. Examples include the Arroyo Seco Bike Trail – Verdugo Peak loop from South Pasadena, the Turnbull Canyon – Turnbull Debris Basin loop from Rose Hills, and the Pasadena Historic City Hall – View from Mount Lukens loop from Memorial Park.
East San Gabriel generally offers favorable year-round cycling weather. However, it's important to note that higher elevations within the San Gabriel Mountains can experience snowfall during winter months. For the most comfortable riding conditions, spring and fall are often ideal, offering milder temperatures.
While specific public transport connections directly to trailheads can vary, many routes are accessible from urban centers within the East San Gabriel area. It's recommended to check local transit authority websites for routes and schedules that connect to areas like South Pasadena, Rose Hills, or Memorial Park, which serve as starting points for popular trails.
Parking availability varies by trailhead. For routes starting in urban areas like South Pasadena or Memorial Park, street parking or public lots may be available. For trails deeper within the San Gabriel Mountains, designated parking areas or pull-offs are common. Always check local regulations and signage for specific parking instructions at your chosen trailhead.
The gravel biking routes in this guide for East San Gabriel are generally rated as difficult due to significant elevation gains and challenging terrain. This makes them less suitable for young children or families seeking very easy, flat rides. For family-friendly options, consider exploring paved bike paths in the wider Los Angeles Basin area, which might offer a gentler experience.
Policies regarding dogs on trails can vary depending on the specific land management agency (e.g., Angeles National Forest, local parks). While some areas may permit dogs on leash, others might have restrictions. It's always best to verify the specific rules for the trail you plan to ride before bringing your dog.
The gravel biking routes in East San Gabriel are highly rated by the komoot community, with an average score of 5.0 stars from 1 review. Riders often praise the challenging experience, the diverse canyon terrain, and the rewarding mountain vistas. Over 40 gravel bikers have used komoot to explore the varied landscapes of East San Gabriel.
Yes, East San Gabriel offers several attractions that complement its outdoor activities. You could visit Bosque del Rio Hondo for a picnic, or explore Debs Lake or Legg Lake. Additionally, Old Town Monrovia, with its historic district, offers charming shops and dining options for a stop during or after a ride, especially if you're near the Duarte Bike Trail – Monrovia Historic Downtown loop.


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