Phoenix Lake to Bon Tempe Lake loop

Parking is available at various access points around Phoenix Lake and Bon Tempe Lake. Specific parking areas are often found near the trailheads, but it's advisable to check local signage for any restrictions or fees, especially within the Mount Tamalpais Watershed.

Generally, there are no specific permits or entrance fees required for cycling on the public trails within the Mount Tamalpais Watershed, which includes this loop. However, always respect posted regulations, especially concerning parking or specific recreational activities.

Regulations regarding dogs can vary within the Mount Tamalpais Watershed. While some areas may allow dogs on leash, others might restrict them to protect wildlife and water quality. It's best to check the specific rules for Phoenix Lake and Bon Tempe Lake trails before bringing your dog.

The loop is enjoyable year-round, but late spring is particularly beautiful with wildflowers like red ribbon clarkia in bloom. The weather is generally mild, making it pleasant for cycling. During summer, shaded sections offer relief, while fall brings vibrant foliage. Always check weather conditions before heading out.

The loop features a diverse mix of surfaces, including paved and unpaved sections, fire roads, and dirt roads. While mostly moderate, some parts can be challenging. For example, Fish Grade, a significant climb, has been improved to hard-packed dirt, enhancing traction. You'll cycle through shaded paths under redwoods and oaks, and transition between densely wooded and more open, sunny areas.

This touring bicycle loop is approximately 33.3 km (20.7 miles) long and typically takes around 2 hours and 37 minutes to complete. This duration can vary based on your cycling pace, fitness level, and how often you stop to enjoy the scenery.

You'll enjoy abundant natural beauty, including picturesque views of Phoenix Lake, Bon Tempe Lake, Alpine Lake, and Lake Lagunitas. Notable landmarks include the Lake Lagunitas Dam. The Bon Tempe Lake area offers open views resembling an 'African savanna scene' in Bon Tempe Meadow. You'll also pass the Corte Madera Pathway.

The clear waters of the lakes provide a peaceful atmosphere, and opportunities for wildlife spotting include ducks, grebes, turtles, herons, and egrets. The surrounding forests are home to various birds and small mammals.

Yes, the trail system is part of the extensive Mt. Tamalpais Watershed and allows for extensions to other lakes and routes. The route also passes through sections of the Eldridge Grade Fire Road, Alex Forman Trail (formerly Sky Oaks), Concrete Pipe Road, Shaver Grade Road, and Lakeview Fire Road, among others.

The Phoenix Lake to Bon Tempe Lake loop is generally considered a moderate bike ride, requiring a good level of fitness. While the main loop around Bon Tempe Lake has fewer steep sections, the overall route includes varied topography and some demanding climbs like Fish Grade. It might be challenging for absolute beginners or very young children, but experienced families could enjoy it.

For this touring bicycle loop, it's recommended to bring plenty of water, snacks, sun protection (sunscreen, hat, sunglasses), and layers of clothing as temperatures can vary. A basic bike repair kit, including a spare tube and pump, is also advisable due to the mixed terrain. Don't forget your camera for the scenic views!