Three Bears Loop

The Three Bears Loop is known for its three distinct climbs: Mama Bear, Papa Bear, and Baby Bear. Mama Bear and Papa Bear each average just under 8% grade over about half a mile, with little shade. Baby Bear is shorter but steeper, reaching grades of 16-18% at its steepest point. These climbs, combined with significant cumulative elevation gain, contribute to its moderate difficulty.

The route is primarily on paved roads, featuring rolling hills, fast descents, and some flatter sections. Cyclists should be aware of potential gravel and debris, especially on downhills. There is also a gravel option on Old San Pablo Dam Road for those who prefer it.

While generally considered moderately challenging, the route is suitable for a fairly wide range of skill levels. However, the three main 'bear' climbs can be demanding. Beginners should approach the climbs steadily, take breaks as needed, and ensure they carry enough water and snacks, especially due to the lack of shade on some uphill sections.

To fully experience the 'bears' as distinct climbs, it is recommended to ride the loop in a clockwise direction. This allows for the proper sequence and challenge of Mama Bear, Papa Bear, and Baby Bear.

The Three Bears Loop is easily accessible from various East Bay communities such as Orinda, Lafayette, Moraga, and Berkeley. Specific parking areas can be found in these towns, often near the start of Bear Creek Road or other access points to the loop.

No, there are typically no specific permits or entrance fees required to cycle the Three Bears Loop, as it primarily uses public roads.

The loop offers diverse and picturesque landscapes. You'll enjoy views of the San Pablo Reservoir, beautiful rolling hills in El Sobrante, and expansive grassy areas. Much of the route, particularly along Alhambra Valley Road and parts of Bear Creek Road, traverses idyllic, uninhabited backcountry scenery.

Yes, the route features several scenic spots. You can enjoy a View of Bear Creek, various Briones Reservoir views, and the Little John Cove overlook of Briones Reservoir. Other notable points include the San Pablo Creek Bridge and sections of the Sobrante Ridge Regional Preserve.

The Three Bears Loop can be enjoyed year-round, but spring and fall often offer the most pleasant cycling conditions with milder temperatures. Summers can be hot, especially on unshaded climbs like Mama Bear and Papa Bear, so starting early is advisable. Winters are generally mild but can bring rain.

As a road cycling route, the Three Bears Loop is not typically considered 'dog-friendly' in the same way a hiking trail might be. Dogs are generally not recommended to accompany cyclists on this challenging road route due to traffic and the nature of the terrain.

Yes, the route intersects with several other paths. It covers sections of the ADT - California - T - Seg 8, the Mokelumne Coast to Crest Trail, the Bay Area Ridge Trail - 02 - East Bay, the Ivan Dickson Trail, and the Bear Creek Trail.