San Gabriel River and Turnbull Canyon Loop

This loop offers a varied experience. The San Gabriel River Trail portion is generally flat and easy, suitable for any fitness level. However, the inclusion of the Turnbull Canyon climb significantly elevates the difficulty, requiring good fitness due to its sustained ascent. Expect a 2.5-mile climb with an average grade of 5-5.2% and switchbacks.

The San Gabriel River Trail is fully paved and largely off-street, offering flat, uninterrupted stretches. In contrast, Turnbull Canyon features narrow roads and significant climbs. While mostly paved, some segments, especially if veering off the main road, might be unpaved and gravelly. The descent from Turnbull Canyon has fun, swooping turns.

The scenery shifts considerably. The San Gabriel River Trail passes through an urban environment with residential and industrial areas, offering views of adjacent parks and the San Gabriel Mountains in the distance. The primary appeal here is often the uninterrupted cycling. Turnbull Canyon, however, provides impressive eagle-eye and panoramic views of Los Angeles County and Hacienda Heights, blending natural beauty with elements like a graffiti-covered water tower at the peak.

The full loop is approximately 72.6 kilometers (45 miles) long and typically takes around 3 hours and 41 minutes to complete by racebike, depending on your pace and stops.

You can start this loop from various points. A common starting point is Manzanita Park in Hacienda Heights, which offers parking. The route often utilizes the Whittier Greenway Trail to connect to the Turnbull Canyon climb.

This route can be enjoyed year-round, but it's best to check weather conditions. After rain, the west side of the Turnbull Canyon road can become muddy and slippery, so caution is advised during those times.

No, there are generally no permits or entrance fees required to cycle the San Gabriel River and Turnbull Canyon Loop. While parts of the route pass near or through areas like the Puente Hills Preserve, access for cycling on the main trails is typically free. Always check local regulations for any updates.

The San Gabriel River Trail portion is a multi-use path where dogs on leash are generally permitted. However, specific regulations for dogs in Turnbull Canyon and connecting trails may vary. It's always best to check local signage and regulations for the specific sections you plan to ride with a dog.

Yes, this route integrates several well-known paths. It primarily uses sections of the San Gabriel River Trail and the Whittier Greenway Trail to connect to the Turnbull Canyon climb. Other official trails along this route include the California Mission Trail - stage 03 San Juan Capistrano to Mission San Gabriel Arcangel, San Gabriel River Greenway, and the Juan Bautista de Anza National Historic Trail.

The San Gabriel River Trail passes through urban areas and connects over a dozen communities, so you'll find various amenities, including cafes and shops, in the towns it traverses. Turnbull Canyon itself is more remote, so plan to carry sufficient water and snacks for that section.

Given the distance and elevation, bring plenty of water, energy snacks, and appropriate cycling gear. A helmet is essential. Consider carrying a repair kit for flats, as some sections of Turnbull Canyon can be narrow or unpaved. Sunscreen is also recommended for sunny days.