Seaview, Big Springs and Quarry Trail Loop

The estimated duration for mountain biking this loop is approximately 1 hour, though this can vary based on your pace and skill level.

The trail primarily features dirt roads, but also includes rocky sections and can involve steep climbs and descents. You'll encounter both singletrack and doubletrack segments. Some parts are shaded by trees like conifers and eucalyptus, while others traverse open meadows.

This loop is generally considered more demanding for mountain biking. While it's moderate for hiking, some sections require advanced riding skills, and you may find yourself needing to push your bike at certain points due to challenging terrain. It's not ideal for beginners.

Riders are treated to expansive views throughout the ride. You'll see panoramic vistas of the San Francisco skyline, the Bay, and Mount Tamalpais to the west. To the east, you can spot the San Pablo and Briones Reservoirs, Mount Diablo, and rolling hills. The trail showcases Tilden Regional Park's unique landscape of meadows and woodlands.

A common starting point with amenities is the Quarry Picnic area within Tilden Regional Park. This area also offers picnic tables.

Tilden Regional Park generally does not require permits or charge entrance fees for day use. However, specific activities or facilities might have fees, so it's always good to check the official East Bay Regional Park District website for the latest information.

Yes, Tilden Regional Park is generally dog-friendly, but dogs must be kept on a leash in developed areas and under voice control in undeveloped areas. Always clean up after your pet.

The trail can be ridden year-round, but be aware that open meadow sections can become hot during summer. Spring and fall often offer more moderate temperatures and pleasant riding conditions. After heavy rains, some sections might be muddy or more challenging.

Yes, this route is part of larger regional and national trail systems. It intersects with sections of the Bay Area Ridge Trail, the American Discovery Trail, and the Mokelumne Coast to Crest Trail, among others.

Key highlights along the route include the Sea View Trailhead, the scenic Seaview Trail itself, and sections of the Volmer Peak Trail, all contributing to the diverse experience and stunning vistas.

Yes, the loop provides a good mix of sun-exposed areas, particularly in the open meadows, and shaded sections under trees like conifers and eucalyptus, offering some relief on warmer days.