Calero Reservoir and Bald Peaks Loop

This route is generally considered difficult. It covers over 25 kilometers with significant elevation gain, requiring very good fitness. Expect challenging trails with steep climbs, especially in the southern portions of Calero County Park.

The Calero Reservoir and Bald Peaks Loop is a long hike, taking approximately 7 hours and 11 minutes to complete for most hikers. Plan for a full day on the trail.

Parking is available within Calero County Park. The main trailhead for this loop is accessible from the park's designated parking areas. Always check for specific parking regulations or fees upon arrival.

Yes, dogs are permitted on-leash on the Bald Peaks Trail and other northern trails within Calero County Park. Please ensure your dog remains leashed and that you clean up after them.

The spring months (March, April, and May) are ideal for hiking this trail, offering abundant wildflowers and lush green hillsides. While beautiful, summer can be very hot, dry, and dusty, so plan accordingly with plenty of water if hiking then.

Calero County Park typically has a vehicle entrance fee. It's always best to check the official Santa Clara County Parks website for the most current information on fees and any specific permit requirements before your visit.

The terrain is quite varied, ranging from rolling grasslands and shaded oak woodlands to chaparral. You'll encounter both wide fire roads and some steep, narrow singletrack sections. The area is also known for its unique serpentine soil, which supports diverse native plants.

You'll be treated to panoramic views of the Calero Reservoir, the Santa Cruz Mountains, and the Santa Clara Valley. Notable viewpoints include the Lisa Killough Trail Viewpoint and the Bald Peaks Trail Viewpoint. The Calero Reservoir Shore is also a prominent feature.

Yes, the route intersects with several other trails. You'll hike sections of the Bay Area Ridge Trail - 03 - South Bay, Oak Cove Trail, Chisnantuk Peak Trail, and the Lisa Killough Trail, among others.

While the park can be popular, it maintains a sense of spaciousness. To fully enjoy the wildflowers and avoid the summer heat, aim for a spring hike. Be prepared for significant sun exposure on many sections, especially as you gain elevation towards Bald Peaks.

The diverse habitats support various wildlife. Keep an eye out for birds, deer, and smaller mammals. An interesting feature along the Javelina Loop Trail, which is part of the broader park system, is the 'Calero Bat Inn,' a large bat box designed to house local bat populations.