Grizzly Peak Boulevard & Redwood Trail loop

This loop is rated as moderate for mountain biking. It requires good fitness due to significant climbs, with some sections of Grizzly Peak Boulevard reaching grades up to 7%. While much of the route is paved, some segments may require advanced riding skills.

The terrain is varied. You'll ride on a significant portion of paved surfaces, including asphalt, paved roads, cycleways, and streets. There are also unpaved sections, gravel, and natural surfaces. The Redwood Trail section offers woodsy, mostly singletrack and some doubletrack portions, though singletrack makes up less than 100 meters of the total loop.

The loop offers diverse scenery. Along Grizzly Peak Boulevard, you'll find breathtaking panoramic vistas of the San Francisco Bay, including iconic landmarks like the Golden Gate Bridge and the Bay Bridge, especially from viewpoints like Bay Overlook and Grizzly Peak Blvd Bay Area Viewpoint. As you transition to the Redwood Trail, the landscape transforms into a tranquil 'fairy-tale forest of redwoods'.

While the exact starting point for parking isn't specified, the loop is located within Tilden Regional Park. You can typically find parking within the park at designated trailheads or along main roads like Grizzly Peak Boulevard. Always check local signage for parking regulations.

Tilden Regional Park generally allows dogs, but specific rules regarding leashes and restricted areas may apply. It's best to check the official East Bay Regional Park District website for the most current regulations on bringing dogs on this specific trail and within the park.

The loop can be enjoyed year-round, but spring and fall often offer the most pleasant riding conditions with mild temperatures and clear views. Winter riding is possible, but be prepared for potentially wet and muddy sections, especially on unpaved trails, and cooler temperatures. Summer can be warm, so an early start is recommended.

Generally, there are no entrance fees or permits required for day use of trails in Tilden Regional Park. However, specific activities or facilities within the park might have fees. It's always a good idea to confirm with the East Bay Regional Park District for any updates or specific regulations.

Yes, the route incorporates sections of several other trails. You'll ride along parts of the Bay Area Ridge Trail - 02 - East Bay, the East Bay Skyline National Recreation Trail, and the Skyline Trail, among others.

While Tilden Regional Park often restricts smaller singletrack trails to hikers, the Redwood Trail referenced in this loop is suitable for mountain biking. It features woodsy, mostly singletrack and some doubletrack portions, but the overall singletrack length is minimal, making it accessible for bikes as part of this multi-use route.

The loop is located near Berkeley, which offers a wide array of cafes, restaurants, and other amenities. After your ride, you can easily find options for refreshments and food in the nearby urban areas.

The average duration for completing this 35.6 km (22.1 mi) mountain bike loop is approximately 2 hours and 31 minutes, though this can vary based on your fitness level and how often you stop to enjoy the views.