4.5
(240)
9,681
riders
10
rides
No traffic road cycling routes in Camino Alto Open Space Preserve traverse a 170-acre expanse in Mill Valley, California, characterized by diverse habitats including grasslands, bay/oak woodlands, and stands of redwood and Douglas fir. The preserve features ridge-top fire roads and well-paved segments, offering varied terrain for road cyclists. Routes often provide panoramic views of the Bay Area, including the San Francisco skyline and Mount Tamalpais. The landscape includes both shaded trails and open areas, with elevations providing significant climbs.
โฆLast updated: July 10, 2026
5.0
(2)
128
riders
31.0km
01:52
710m
710m
The Pan Toll Road via Panoramic Highway offers a challenging road cycling experience that rewards grit with incredible scenery. You'll climb through dense redwood forests, eventually breaking out to panoramicโฆ
156
riders
35.1km
02:10
940m
940m
The Pantoll Road โ Mount Tamalpais Summits loop from Mill Valley offers a challenging road cycling experience through diverse landscapes. You'll climb through dense redwood forests, tackle the moderately steepโฆ

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5.0
(3)
28
riders
This road cycling route offers a unique combination of Marin County's scenic Paradise Loop and San Francisco's historic Presidio, culminating at Immigrant Point Overlook. You'll roll through diverse landscapes, fromโฆ
5.0
(1)
28
riders
Moderate road ride. Good fitness required. Mostly well-paved surfaces and easy to ride.
20
riders
76.7km
04:09
1,410m
1,410m
If you're looking for one of the best road bike routes Marin County has to offer, the Alpine Lake โ Alpine Dam loop delivers an exceptional experience. This challenging 47.6-mileโฆ
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Popular around Camino Alto Open Space Preserve
There is a fire road that runs along the treeless top of the uplands, as well as a winding paved drive down by the coast. There are also some steep hiking trails. From the uplands you get great views of San Francisco Bay and especially Angel Island.
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Constructed in 1917 this dam forms Alpine Lake, which sites between Kent and Bon Tempe Lakes. The road across the top of the dam make it a great place to ride on a loop around the lake.
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This lake was formed by the building of Alpine Dam in 1917. It sits between Kent Lake and Bon Tempe Lake, and is popular for a variety of outdoor activities.
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Set beneath the towering trees of Mount Tam, Rock Springs is the perfect jumping-off point for scenic hikes and quiet picnicsโwhere trails, wildlife, and wide-open views begin.
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The Pantoll Campground is a First-come/first-serve site in Mt. Tamalpais State Park. Each site has a barbeque grill, a fire ring, and a picnic table. You need to pay for the site at the Ranger Station as you enter the park.
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Now open for more than a hundred years, this inn welcomes visitors high on the flanks of Mount Tamalpais. The guestrooms mostly face east, but the grounds include great vantages to the west over the Bay. There's also a restaurant, and this has been voted one of the most romantic spots in the Bay Area several times over.
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Camino Alto Open Space Preserve offers 8 dedicated no traffic road cycling routes. These routes cater to various fitness levels, with 4 moderate and 4 difficult options to explore.
The routes in Camino Alto Open Space Preserve are renowned for their breathtaking panoramic vistas. You can enjoy expansive views of the entire Bay Area, including the iconic San Francisco skyline, the Bay Bridge, and Mount Tamalpais. Many routes follow ridge-tops, offering continuous scenic overlooks. Keep an eye out for Middle Summit / Escalon Fire Road for great views, and you might even spot horses grazing on nearby Horse Hill.
While the preserve offers routes for varying fitness levels, the listed no traffic road cycling routes are generally moderate to difficult. However, the 'no traffic' aspect makes them safer for families with older, more experienced children. Always check the route details for elevation and distance to ensure it matches your family's capabilities. The preserve's fire roads are often popular for their relatively level sections along ridges.
Yes, Camino Alto Open Space Preserve is dog-friendly. However, leash regulations apply to different trail types, so it's always best to check local signage or park rules before heading out with your furry companion.
The preserve is enjoyable year-round, but spring and early summer are particularly pleasant when the vibrant pink blooms of rockrose add to the natural beauty. The well-forested, west-facing slopes provide ample shade, making for comfortable rides even on warmer days. Always check local weather conditions before your ride.
Yes, several routes in the preserve are designed as loops, allowing you to start and end at the same point. Examples include the "Bothin Marsh Preserve โ Camino Alto Road loop from Mill Valley" and the "Camino Alto Road โ Corte Madera Creek loop from Mill Valley" mentioned in regional research. You can also find routes like Pantoll Road โ Mount Tamalpais Summits loop from Mill Valley and Alpine Lake โ Alpine Dam loop from Larkspur.
The no traffic road cycling routes in Camino Alto Open Space Preserve often feature varied terrain, including well-paved sections and fire roads. You can expect significant elevation changes, as many routes climb to ridge-tops for panoramic views. For instance, the Pan Toll Road via Panoramic Highway route involves over 700 meters of elevation gain.
A popular starting point is the Camino Alto OSP - Fire Road Trailhead. While the preserve itself lacks dedicated restrooms, parking is generally available near popular access points. It's advisable to check specific route details for the most convenient parking options.
The area is highly rated by the komoot community, with an average score of 4.6 stars from 174 ratings. Reviewers often praise the stunning panoramic views, the challenge of the climbs, and the peaceful, traffic-free environment that allows for an immersive cycling experience amidst diverse natural habitats.
Yes, while Camino Alto Road is a popular cycling route, it can be hilly and narrow. An alternative to consider is Chapman Drive alternative to Camino Alto, Corte Madera, which offers another option for cyclists looking to navigate the area with less traffic.
You'll cycle through a rich variety of habitats, including grasslands, bay/oak woodlands, and stands of redwood and Douglas fir. Many trails are shaded, particularly those lined with redwoods, oaks, and Douglas firs, providing a refreshing experience. Coast live oaks are also prevalent along roads and trails.


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