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Road cycling routes
United States
California
Santa Clara County

Sierra Azul Open Space Preserve

The best road cycling routes in Sierra Azul Open Space Preserve

4.7

(139)

4,360

riders

120

rides

Road cycling routes in Sierra Azul Open Space Preserve traverse a diverse landscape within the Santa Cruz Mountains, characterized by serpentine grasslands, chaparral hills, and shaded oak woodlands. The preserve features significant elevation changes, including prominent peaks like Mount Umunhum (3,486 feet) and Mount El Sombroso (2,999 feet), which offer challenging climbs. Riders can experience deep ravines and areas connecting to Lexington Reservoir, providing varied terrain for road cyclists. The network includes both paved and unpaved old roads, catering to…

Last updated: July 15, 2026

4.7

(3)

133

riders

#1.

Eureka Canyon Loop

101km

05:21

1,590m

1,590m

This difficult 63.0-mile road cycling loop in Santa Cruz offers challenging climbs through redwood forests and rewarding descents.

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Hard

Hard road ride. Very good fitness required. Some segments of this route may be unpaved and difficult to ride.

Hard
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Moderate road ride. Good fitness required. Mostly well-paved surfaces and easy to ride.

Moderate

Hard road ride. Very good fitness required. Some segments of this route may be unpaved and difficult to ride.

Hard

Hard road ride. Very good fitness required. Mostly well-paved surfaces and easy to ride.

Hard
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Tips from the Community

David B. Davis
August 30, 2025, Wilder Ranch Bike Path

What's special about this path is that it takes you from Santa Cruz to the Wilder Ranch Park without using Route 1. Once there, you have multiple dirt path choices to ride around up into the park.

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Northern entrance to the coastal park from Delaware Ave. The trailhead is pedestrian and biker only, The former road goes straight to the beach, while smaller trails turn east into the Monarch Butterfly Natural Preserve, and West into the upper portions of the State Beach Park.

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A small open space tucked behind Scotts Valley, Holding 4 is a quick nature escape with a mix of fire roads and mellow trails. It’s not big, but it’s a nice detour if you’re riding nearby and want a short break from pavement.

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A scenic stop just off the winding roads of the Santa Cruz Mountains, Lexington Reservoir County Park is a great spot to catch your breath and enjoy the view. The smooth pavement along Alma Bridge Road makes it a popular stretch for cyclists, with rolling terrain and minimal traffic. There's parking, restrooms, and shaded areas if you need a break. From here, you can loop toward Los Gatos or push deeper into the climbs of Highway 17 and Old Santa Cruz Highway.

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If you're in Santa Cruz, Regale Vineyards is a must-visit. Nestled in the Santa Cruz Mountains, it offers more than just great wine – the views are incredible. Whether you're enjoying a tasting on the patio or strolling through the vineyards, you’ll be surrounded by lush greenery and towering redwoods. It’s a peaceful spot to relax and soak in the beauty of the area. Plus, the wines are fantastic, showcasing the best of the region.

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An excellent spot to take a break and enjoy the full breath of Lexington Reservoir. There is a Plaque dedicated to deputy Douglas B. Miller, who was fatally wounded while performing his duties.

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Moto
November 17, 2024, Old Summit Road

A gentle route between South Bay and Santa Cruz.

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Zachary
September 19, 2024, James J. Lenihan Dam

From the top of the dam you get splendid views out across Lexington Reservoir. To the north you overlook the winding end of the Los Gatos Creek Trail, which connects to the Jones Trail across from the restroom just up the road. The dam itself was constructed in 1952 and stands at nearly 200 feet tall.

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Frequently Asked Questions

How many road cycling routes are available in Sierra Azul Open Space Preserve?

Sierra Azul Open Space Preserve offers over 110 road cycling routes. These routes cater to various skill levels, with 37 easy, 57 moderate, and 24 difficult options available for exploration.

What kind of terrain and elevation can I expect on road cycling routes in Sierra Azul Open Space Preserve?

Road cycling in Sierra Azul Open Space Preserve is characterized by significant elevation changes and diverse terrain. You'll encounter challenging climbs to prominent peaks like Mount Umunhum (3,486 feet) and Mount El Sombroso (2,999 feet), as well as varied landscapes including serpentine grasslands, chaparral hills, and shaded oak woodlands. Routes often feature deep ravines and areas near Lexington Reservoir.

Are there any family-friendly road cycling routes in Sierra Azul Open Space Preserve?

Yes, Sierra Azul Open Space Preserve offers 37 easy road cycling routes that are generally suitable for families or those looking for a less strenuous ride. While many routes involve significant climbs, these easier options provide a more gentle introduction to the preserve's beauty.

What are some notable landmarks or viewpoints I can see while road cycling in the preserve?

Road cycling routes in Sierra Azul Open Space Preserve offer spectacular panoramic views, especially from higher elevations like Mount Umunhum and Bald Mountain, stretching across the Santa Clara Valley and the Santa Cruz Mountains. A significant landmark is Mount Umunhum Road (climb), leading to the distinctive radar tower. You might also pass by areas like Kennedy Road Sierra Azul Trailhead or the scenic Sierra Azul Open Space itself.

Are there any road cycling routes that pass by Lexington Reservoir?

Yes, several road cycling routes are located near Lexington Reservoir. For example, the Old Santa Cruz Highway loop from Lexington Reservoir County Park is a popular moderate route. Another option is the Roadbike loop from Lexington Reservoir County Park, which also offers a moderate challenge.

What is the best time of year to go road cycling in Sierra Azul Open Space Preserve?

The Santa Cruz Mountains, including Sierra Azul Open Space Preserve, generally offer pleasant cycling conditions for much of the year. Spring and fall often provide mild temperatures and clear skies, ideal for tackling the preserve's challenging climbs. Summers can be warm, especially at lower elevations, while winters may bring rain, making some routes slick. Checking local weather forecasts before your ride is always recommended.

What do other road cyclists say about their experience in Sierra Azul Open Space Preserve?

The road cycling routes in Sierra Azul Open Space Preserve are highly rated by the komoot community, with an average score of 4.7 stars from over 150 reviews. Cyclists often praise the challenging climbs, the rewarding panoramic views, and the diverse natural beauty of the preserve, from shaded woodlands to open chaparral.

Are there any specific permit requirements for road cycling in Sierra Azul Open Space Preserve?

While many sections of Sierra Azul Open Space Preserve are open to the public for activities like biking, it's always advisable to check the official Midpeninsula Regional Open Space District website for the most current information regarding any specific permit requirements or regulations that might apply to certain areas or activities within the preserve.

Where can I find parking for road cycling routes in Sierra Azul Open Space Preserve?

Parking availability varies depending on the specific trailhead or starting point for your chosen route. Popular access points often have designated parking areas. For routes starting near Lexington Reservoir, such as the Old Santa Cruz Highway – James J. Lenihan Dam loop, you can typically find parking at Lexington Reservoir County Park or nearby access points.

Are the road cycling trails in Sierra Azul Open Space Preserve fully paved?

Many of the road cycling routes in Sierra Azul Open Space Preserve utilize paved roads, especially for the significant climbs like Mount Umunhum. However, the preserve also features old roads, some of which are unpaved. It's important to check the route details on komoot to confirm the surface type for your specific chosen path, as some multi-use trails may not be entirely paved.

What kind of wildlife might I encounter while cycling in the preserve?

Sierra Azul Open Space Preserve is home to abundant wildlife due to its diverse habitats. While cycling, you might spot deer, various bird species, and occasionally bobcats or coyotes. Mountain lions are also present in the preserve, though they are rarely seen. Always maintain a respectful distance and be aware of your surroundings.

Are there any cafes or amenities near the road cycling routes in Sierra Azul Open Space Preserve?

The preserve itself is primarily a natural area, so amenities like cafes are not typically found directly on the routes. However, towns like Los Gatos and San Jose, which are close to the preserve's access points, offer a variety of cafes, restaurants, and accommodation options for cyclists before or after their rides.

Most popular routes in Sierra Azul Open Space Preserve

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