Calera Creek and Agua Caliente Trail Loop

The loop is located within Ed R. Levin County Park in Milpitas, California. You can typically find parking near the hang glider launch site, which is a common starting point for this route.

Yes, Ed R. Levin County Park may have entrance fees, especially for vehicle entry. It's advisable to check the official Santa Clara County Parks website for the most current information on fees and any specific regulations before your visit.

Yes, dogs are generally allowed on the trails within Ed R. Levin County Park, including this loop. However, they must be kept on a leash at all times. Be aware that you will likely encounter grazing cattle on the trail, so ensure your dog is well-behaved around livestock.

Spring and fall are generally the best times to jog this loop, offering milder temperatures. Summers can be very hot and sunny due to the trail's exposed nature, making early morning or late afternoon runs preferable. After wet weather, the trail can be particularly rutted by cattle, so consider drier periods.

The terrain is varied and can be challenging. It starts with a mellow, paved section but quickly transitions to multi-use fire roads with significant elevation changes. Expect segments of increasing grade and effort. A notable feature is the presence of 'serious road ruts' caused by grazing cattle, which can be uneven and hard, especially after drying out. The upper portions are doubletrack.

This loop is generally considered strenuous for jogging due to its significant elevation gain (around 190 meters or 620 feet) and varied, often rutted terrain. While shorter in distance, the steep sections and uneven surfaces make it more suitable for intermediate to experienced joggers or those looking for a challenging hill workout. Beginners might find it tough, especially without prior hill training.

You'll experience a mix of scenery, from views of a golf course and homes to a more natural, 'bucolic' landscape with grazing cattle. As you ascend, the trail offers rewarding panoramic views of the Bay Area to the west and rolling hills to the east. Observing hang gliders and paragliders from their launch sites is also a unique spectacle. The trail itself follows Calera Creek for a portion.

Yes, this loop is part of the larger Bay Area Ridge Trail system. The route itself utilizes sections of the Calera Creek Trail and the Agua Caliente Trail. You'll also find it intersects with other paths like the Tularcitos Trail and the Sandy Wool Trail, offering options for longer or alternative routes, including connections towards Mission Peak Regional Preserve.

No, the Calera Creek and Agua Caliente Trail Loop is largely exposed with minimal tree cover. This means it can be very sunny, especially during warmer months. It's crucial to bring plenty of water, wear sun protection, and plan your run for cooler parts of the day if visiting in summer.

The main challenges are the significant elevation changes and the uneven terrain, particularly the 'serious road ruts' caused by cattle, which can make footing tricky. For a more strategic approach, be prepared for steep ascents and descents. Bringing ample water is essential due to the lack of shade. Many experienced runners use these trails for effective hill training.