Egg Rock — Devil's Slide – Gray Whale Cove State Beach loop from San Bruno

If you're seeking a road cycling challenge that delivers truly iconic coastal views, the Egg Rock — Devil's Slide – Gray Whale Cove State Beach loop from San Bruno is a difficult 44.1-mile (71.0 km) route. It packs in 3334 feet (1016 metres) of climbing over an estimated 3 hours and 41 minutes, making it a rewarding ride for experienced cyclists ready for significant elevation changes and breathtaking Pacific vistas.

What to expect on Egg Rock — Devil's Slide – Gray Whale Cove State Beach loop from San Bruno

Starting from San Bruno, you'll encounter varied topography, from flatter sections near the bay to rolling hills, including potential ascents on San Bruno Mountain. The real highlight comes as you approach the coast, with the Devil's Slide Trail offering spectacular panoramic views of the Pacific. This 1.3-mile paved multi-use path, a former segment of Highway 1, provides safe cycling with separate lanes, where you'll spot Egg Rock, a prominent sea stack and bird colony, offshore. Just south, Gray Whale Cove State Beach awaits, nestled in a small valley, though accessing it involves a steep descent and climb. This route demands good fitness and confidence, particularly on sections of Highway 1 that can be narrow and highly frequented by traffic.

Planning your visit

Be mindful of potential strong winds along the coast, which can significantly impact your ride; checking the weather forecast is crucial. While the Devil's Slide Trail is well-maintained, some connecting segments in the broader area might have unpaved sections, so be prepared for varied terrain. The area is excellent for whale watching, especially gray whales during their spring migration, and offers vibrant wildflowers in spring, making these seasons particularly appealing for a visit.

Trail details

• Distance: 44.1 miles (71.0 km)
• Elevation gain: 3334 feet (1016 metres)
• Difficulty: difficult
• Estimated time: 3 hours and 41 minutes