Bay Area Mountain Bike Trail Conditions

Find mountain biking around the Bay Area, then compare the dirt before choosing a trail. Start with a riding area to separate coastal forests, inland hills and farther destinations.

Choose a riding area

Show riding areaCompare conditions ↓

Dots are trail locations. Numbered groups zoom to nearby networks.

Map geometry © OpenStreetMap contributors · Elevation contours: NASA SRTM via OpenTopoData

A wooded trail through El Corte de Madera Creek Preserve — Forest in El Corte de Madera Creek Preserve on the Peninsula. Photo: Inklein, CC BY-SA 4.0 · License · Cropped for display.

Compare network conditions

Ordered by current verdict, with matching verdicts listed alphabetically. Official closures take priority.

38 of 38 networks shown

Watch a trail in Bay Area

Find your trail in Loam and turn on alerts. Watch one network free. No account needed.

Coast, forest or inland hills?

A Bay Area weather forecast is not a trail forecast. The coast, redwood forests and exposed inland slopes respond differently to a passing storm. Compare the network you intend to ride, then check the land manager for access.

Across the 38 networks Loam tracks here, elevation spans 3,117 feet and canopy runs from 0 to 84 percent. These measurements describe representative network points, not the full elevation range of every trail. Compare the individual forecasts and check local reports before choosing a ride.

Elevation range23 to 3,140 ft

Canopy range0 to 84%

Most shadedSoquel Demonstration Forest, 84%

Most exposed3 networks, 0%

Tracked networks38

Mountain biking around Bay Area

The useful unit here is the riding zone. Each one has its own exposure, elevation, and weather response.

Marin and the North Bay

Marin riding spans forested slopes, open ridges and bayside parks. Trail access changes between land managers; use the posted bike routes rather than assuming every footpath is open.

43 to 1,211 ft42 to 78% canopy

Mt. Tamalpais (Marin) → Tamarancho → China Camp → Bolinas Ridge → Mount Burdell →

Sonoma and Lake County

Annadel and Boggs Mountain are separate destinations north of Marin. Check each park independently, particularly after storms or during fire restrictions.

771 to 2,996 ft34 to 54% canopy

Annadel State Park → Boggs Mountain →

Solano County

Lagoon Valley, Lynch Canyon and Rockville Hills are in Solano County. Open hills and pockets of tree cover make for a different setting from the coastal forests.

390 to 840 ft0 to 28% canopy

Lagoon Valley / Pena Adobe → Lynch Canyon Open Space → Rockville Hills Regional Park →

East Bay hills

Choose a park before choosing a route in the East Bay. Bike access varies between park roads and singletrack, and shaded canyons can behave differently from open hillsides after rain.

144 to 3,140 ft0 to 73% canopy

Briones → Brushy Peak → Chabot → Crockett Hills → Del Valle Regional Park → Joaquin Miller → Las Trampas → Mount Diablo → Redwood Regional Park → Shell Ridge → Sunol Regional Wilderness → Tilden → Wildcat Canyon →

Peninsula forests and coast

The Peninsula combines wooded trails near Skyline Boulevard with coastal ridges. Skeggs is another name used for El Corte de Madera; the two catalog entries describe the same preserve, not two separate destinations.

23 to 2,057 ft18 to 82% canopy

At El Corte de Madera: Sierra Morena and Timberview. Check Midpen maps for permitted routes.

El Corte de Madera → Montara Mountain → Pacifica → Skyline Watershed Ridge Trail → Sweeney Ridge → Waterdog Lake → Pearson-Arastradero Preserve →

South Bay

Calero, Santa Teresa and Henry Coe offer separate riding areas south of San Jose. Lake Cunningham is a purpose-built bike park with its own operating rules, so check its schedule before a visit.

108 to 2,582 ft0 to 49% canopy

Calero County Park → Henry Coe State Park → Lake Cunningham Bike Park → Santa Teresa County Park →

Santa Cruz and Monterey

These are destinations south of the central Bay Area, not adjoining trailheads. Compare Soquel Demonstration Forest, Wilder Ranch and Fort Ord separately. At Big Basin, confirm the current bike-access map and recovery closures before planning a route.

180 to 1,536 ft24 to 84% canopy

Big Basin Redwoods State Park → Soquel Demonstration Forest → Wilder Ranch → Fort Ord →

A season by season read

Planning patterns, not opening dates. Live conditions and official access decide the day.

Spring

Rain and drying alternate. Look for remaining wet tread beneath trees even when open slopes look dry.

Summer

Inland rides can be hot and dusty while coastal areas remain cooler. Tree cover is a useful comparison, not a promise of comfortable temperatures.

Fall

The first rain can change loose, dry surfaces quickly. Check the recent rain and current model for the individual network.

Winter

Rain, short days and soft ground can narrow the riding window. Respect wet-weather closures and avoid leaving ruts.

Coastal cliffs and the Pacific Ocean at Wilder Ranch State Park — Wilder Ranch sits on the coast near Santa Cruz, a different setting from inland Bay Area trails. Photo: Grey3k, CC BY 3.0 · License · Cropped for display.

Bike access is park by park

A modeled rideable verdict does not open a closed trail or make a hiking-only route bike legal. Check current park maps, posted restrictions and any permit requirements before you ride.

Midpen preserve maps and closures · East Bay Regional Parks · California State Parks

Trail work around Bay Area is done by Bicycle Trails Council of the East Bay, Friends of China Camp, Friends of Tamarancho, Mount Diablo Interpretive Association and Solano Land Trust. Support your local builders.

FAQ

Are Bay Area mountain bike trails rideable right now?

15 of 15 networks around Bay Area currently have a PRIME or DUSTY verdict, meaning rideable conditions. For example, Big Basin Redwoods State Park is PRIME and Lake Cunningham Bike Park is DUSTY. Check the network page for details and closure notices.

Which Bay Area trails are riding best today?

Rideable options around Bay Area include Big Basin Redwoods State Park (PRIME, firm, rideable conditions), Boggs Mountain (PRIME, firm, rideable conditions) and Bolinas Ridge (PRIME, firm, rideable conditions).

Where can I mountain bike in the Bay Area after rain?

Compare current network conditions, then use the riding-area filter to narrow the options. A coastal forest and an inland hillside may dry differently; no park is guaranteed to be rideable after every storm. Official closures take priority.

Are Skeggs and El Corte de Madera different places?

Skeggs is a commonly used name for riding at El Corte de Madera Creek Preserve. Loam currently has two catalog entries, but they are not two separate riding destinations.

Does this page include Santa Cruz and Monterey?

Yes. They appear as a separate riding area so you can compare farther destinations without treating them as adjoining Bay Area trailheads.

How often are Bay Area trail conditions updated?

Loam updates condition estimates hourly. Each network page shows when its estimate was last updated.

What are these conditions based on?

Loam uses recent rain, soil, slope, slope direction, tree cover, and current weather to estimate how wet the ground is. These are estimates, not rider reports. Official closures take priority. See how the model works.