Whittemore Gulch and Purisima Creek Loop Trail

This loop is generally considered difficult due to its length and significant elevation changes. You can expect climbs of around 1,500 to 2,400 feet over 6.5 to 9.3 miles. The Harkins Ridge section, in particular, is known for its steep ascent, offering a good workout.

The trail offers diverse terrain. You'll hike through dense second-growth redwood forests, especially along the Purisima Creek Trail and within Whittemore Gulch, which are often shaded and lush. As you climb towards Harkins Ridge and the North Ridge Trail, the scenery opens up to sunnier coastal scrub with expansive panoramic views of Half Moon Bay and the Pacific Ocean, sometimes including Pillar Point Overlook. Trails are mostly natural earth surfaces, which can be muddy after rain, and you might encounter exposed roots and rocks.

The full Whittemore Gulch and Purisima Creek Loop Trail, which is about 9.4 miles (15.2 km) long, typically takes around 4 hours and 40 minutes to complete. This duration can vary based on your pace and how often you stop to enjoy the views.

You'll be immersed in majestic redwood forests with lush undergrowth and the sound of Purisima Creek. Key viewpoints include the panoramic coastal vistas from Harkins Ridge and the North Ridge Trail, offering views of Half Moon Bay and the Pacific Ocean, potentially extending to Pillar Point Overlook. The trail showcases a blend of shady redwood canyons and open hilltops.

The trail has year-round appeal. Spring is excellent for rushing creeks and vibrant ferns, while fall offers cooler temperatures. The shaded redwood sections make it a good option in summer to escape heat. Even in wet weather, the trails are manageable, though you should expect mud.

The main access point is typically the Purisima Creek Redwoods Open Space Preserve parking lot. It's advisable to arrive early, especially on weekends, as parking can fill up quickly.

No, there are generally no permits or entrance fees required to hike in the Purisima Creek Redwoods Open Space Preserve. However, always check the official Midpeninsula Regional Open Space District website for the most current regulations before your visit.

No, dogs are generally not allowed on the trails within the Purisima Creek Redwoods Open Space Preserve, including the Whittemore Gulch and Purisima Creek Loop Trail. Always confirm specific regulations with the park authority before bringing pets.

The trails are generally well-maintained but can become quite muddy after rain, especially in the redwood sections. You should also watch out for exposed roots and rocks. In sunnier, coastal scrub areas, poison oak can be present, so it's wise to know how to identify it.

Yes, the route incorporates sections of several other trails. You'll hike along parts of the Bay Area Ridge Trail - 04 - San Francisco and Peninsula, the Craig Britton Trail, Purisima Creek Trail, Harkins Ridge Trail, and Whittemore Gulch Trail.

Given its 'difficult' rating, significant length, and elevation gain, this loop is generally not recommended for beginner hikers or young children. It's best suited for experienced hikers looking for a challenging and rewarding experience. There might be shorter, easier options within the preserve for families.