Jim Donnelly and Grizzly Gulch Loop

The Jim Donnelly and Grizzly Gulch Loop is located within Coyote Lake - Harvey Bear Ranch County Park. You can typically find parking at the main trailhead for the park. Specific parking details might be available on the park's official website.

Yes, as the Jim Donnelly and Grizzly Gulch Loop is located within Coyote Lake - Harvey Bear Ranch County Park, there may be entrance fees or parking fees required. It's best to check the official Santa Clara County Parks website for the most current information on fees and any specific regulations for mountain biking within the park.

Regulations regarding dogs can vary within county parks. While some trails may allow dogs on leash, it's crucial to verify the specific rules for Coyote Lake - Harvey Bear Ranch County Park and this particular loop before bringing your dog. Check the park's official website for their current pet policy.

The loop offers diverse scenery throughout the year. Spring and fall generally provide the most pleasant riding conditions with milder temperatures. Summer can be hot, especially in open grassy areas, while winter rides are possible but be prepared for potentially muddy or wet conditions, especially after rain. Always check weather conditions before heading out.

This loop is considered a difficult mountain bike route. It features significant elevation changes, including a substantial climb up the Jim Donnelly Trail, which gains about 1,800 feet. While the climb is often described as gradual, the overall physical rating is hard. The Grizzly Gulch Trail also includes rocky, gravely, and steeper sections requiring skill.

The terrain is varied and challenging. The Jim Donnelly Trail is primarily singletrack with a gradual climb. After a descent on Serpentine Trail, the Grizzly Gulch Trail offers varied rolling singletrack with fast downhill sections, mostly-level stretches, and some short, punchy uphills. Expect rocky, gravely, and steeper areas, especially near stream crossings.

The loop offers diverse and scenic views. Along the Jim Donnelly Trail climb, you'll find great vistas, with a picnic table for a break. The Grizzly Gulch Trail traverses beautiful rolling terrain, with approximately half the ride among oak trees and the other half through open grassy areas, often following a creek.

The Jim Donnelly and Grizzly Gulch Loop is approximately 33 km (20.5 miles) long. Given its difficult rating and significant elevation gain, it typically takes around 4 hours to complete for an experienced mountain biker, though this can vary based on fitness levels and stops.

Yes, the route utilizes and intersects with several other trails within Coyote Lake - Harvey Bear Ranch County Park. Notable sections include the Jim Donnelly Trail and the Grizzly Gulch Trail. Other trails you might encounter or ride on include Steer Ridge Road, Spike Jones Trail, Anza Trail, and Serpentine Trail, among others.

Due to its difficult rating, significant elevation gain, and varied technical terrain, this loop is generally not recommended for beginners or young families. It's best suited for intermediate to advanced mountain bikers looking for a challenging and rewarding ride.

Given the length and difficulty, it's essential to be well-prepared. Bring plenty of water, snacks, a repair kit for your bike, and appropriate safety gear including a helmet. Sun protection (sunscreen, hat) is advisable for open sections. Be aware that overgrown grass and thorny plants have been noted, so long sleeves/pants might be beneficial to prevent scratches and ticks.