Miwok, Coastal, and Dias Ridge Loop

Parking is available at various access points for this loop. The Tennessee Valley trailhead is a common starting point, though it can get crowded, especially on weekends. Arriving early is recommended to secure a spot.

The Miwok, Coastal, and Dias Ridge Loop is approximately 17.6 km (10.9 miles) long. Most mountain bikers complete it in about 2 hours, but this can vary depending on your pace and how often you stop to enjoy the views.

This loop is generally considered moderate and best suited for intermediate riders. While the Miwok Trail has some smooth fire road sections, it also features sharp climbs, technical areas with stairs and deep ruts, and uphill-only segments for bikes. The Coastal Trail can also be rutted. The Dias Ridge Trail is smoother but includes switchbacks and grades up to 25%.

The Miwok, Coastal, and Dias Ridge Loop is located within the Golden Gate National Recreation Area. There are no specific permits or entrance fees required for day use of the trails. However, always adhere to posted trail rules, which include staying on marked trails, respecting wildlife, and following specific regulations regarding dogs and e-bikes where applicable. Check the park's official website for the most current information.

You'll encounter a diverse range of terrain. The Miwok Trail features fire roads, some rocky and rutted sections, and narrow singletrack. The Dias Ridge Trail varies between smooth singletrack and wider multi-use paths with switchbacks. The Coastal Trail is a fun, flowing singletrack, though it can also have rutted areas.

The loop offers spectacular and constantly changing views. You'll pass through chaparral, eucalyptus groves, oak woodlands, and redwood-fir forests. The Miwok Trail provides views of Richardson Bay. However, the most stunning vistas are along the Dias Ridge and Coastal Trail, with panoramic views of the Pacific Ocean, Muir Beach, and the Marin Headlands. On clear days, you might even spot the Golden Gate Bridge.

The trail can be ridden year-round, but spring and fall generally offer the most pleasant conditions with mild temperatures and clear skies. Summer can bring coastal fog, which can obscure views but also keep temperatures cool. Winter rides are possible but be prepared for potentially wet and muddy conditions, especially after rain.

Dogs are generally allowed on leash on most trails within the Golden Gate National Recreation Area, including sections of this loop. However, specific trail segments may have restrictions, so always check signage at trailheads. Please ensure your dog is under control and pack out all waste.

Yes, this loop intersects with several other well-known paths. You'll find sections that are part of the Bay Area Ridge Trail - 01 - North Bay, the California Coastal Trail, and the Marin Coastal Bike Route. It also utilizes segments of the Tennessee Valley Trail and Coastal Fire Road.

Yes, the route offers a convenient rest stop at Muir Beach. Here, you can find the Pelican Inn, which provides a great spot for refreshments and a break before continuing your ride.

To fully appreciate the diverse scenery and avoid the steepest climbs early on, consider riding the loop clockwise. This allows for a more gradual ascent on some sections and positions you for the most dramatic ocean views on the Dias Ridge and Coastal Trails later in your ride. Arriving early, especially on weekends, will also help you secure parking and enjoy quieter trails.