Pulgas Water Temple – Purisima Creek Trailhead loop from Highlands-Baywood Park

If you're looking for a challenging mountain biking adventure that stitches together some of San Mateo County's best-known cycling spots, the Pulgas Water Temple – Purisima Creek Trailhead loop from Highlands-Baywood Park is a moderate 28.6-mile (46.1 km) route with a hefty 2866 feet (874 metres) of climbing, taking around 3 hours and 9 minutes. This ambitious loop is best for experienced riders ready to tackle varied terrain and significant elevation, offering a unique combination of redwood forests and scenic reservoir views.

What to expect on Pulgas Water Temple – Purisima Creek Trailhead loop from Highlands-Baywood Park

This route promises a ride of two distinct halves. You'll begin near Highlands-Baywood Park, likely connecting to the more leisurely Crystal Springs Regional Trail around the Pulgas Water Temple. Here, expect an easy, narrow earth or gravel path, perfect for enjoying the serene watershed landscape and the picturesque Beaux-Arts monument itself. The real challenge kicks in as you head towards Purisima Creek Redwoods Open Space Preserve. Here, the terrain shifts dramatically to dense redwood forests, deep creek valleys, and varied elevations. You'll navigate a mix of shaded singletrack and wider fire roads, with trails like Whittemore Gulch offering superbly flowing singletrack with switchbacks, while others, such as Harkins Ridge, present grueling climbs with technical roots. Expect physically demanding sections and potentially muddy conditions, especially after rain, but you'll be rewarded with towering redwoods, lush fern-filled canyons, and expansive views of the San Mateo County Coast from higher elevations.

Planning your visit

Given the significant elevation changes and varied terrain, ensure your bike is in top condition and you have adequate fitness for this moderate mountain biking route. The Pulgas Water Temple area is generally accessible, but Purisima Creek trails can be physically demanding. Always check weather conditions, as trails in Purisima Creek can become very muddy during the wet season. Parking is available in the Highlands-Baywood Park area, but specific trailhead parking for this combined loop might require some planning. Consider bringing plenty of water, especially on warmer days, as the Purisima Creek section involves sustained effort.

Trail details

• Distance: 28.6 miles (46.1 km)
• Elevation gain: 2866 feet (874 metres)
• Difficulty: moderate
• Estimated time: 3 hours and 9 minutes