5.0
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Touring cycling routes around Granite Hills feature diverse terrain characterized by granite formations, offering varied topography with elevation changes. The region provides access to natural features and attractions, including river trails and hills. These geological characteristics create engaging routes with scenic views of surrounding landscapes.
Last updated: April 29, 2026
29.3km
02:34
590m
590m
Cycle a difficult 18.2-mile loop through San Diego National Wildlife Refuge, featuring diverse terrain and Sweetwater Reservoir views.
10
riders
50.5km
03:40
1,030m
1,030m
Hard bike ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.

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10
riders
59.6km
03:50
740m
740m
Hard bike ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
7
riders
45.5km
04:33
1,020m
1,010m
Hard bike ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
7
riders
69.4km
04:24
810m
810m
Hard bike ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
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The Sweetwater River is a small year-round stream that flows 55 miles from the Cuyamaca Mountains to the San Diego Bay.
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The Steele Canyon Bridge, also known as the Sweetwater River Bridge, is a beautiful landmark crossing the Sweetwater River. It is on the National Register of Historic places, and is no longer used for vehicles but is a great hiking, running or biking spot.
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This area is the northernmost part of Otay Ranch and the southern part of the San Diego National Wildlife Refuge. The scenic views of rolling hills and well-maintained trails make it a highly popular biking area.
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Hollenbeck Canyon Wildlife Area provides a 6,100-acre wildlife corridor between Otay Mountain and the Jamul Mountains. This mainly includes coastal sage scrub, chaparral, oak woodlands, riparian forests, freshwater marshes, and grasslands. The height range hovers between a low of 750' to 2,100'.
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The Sweetwater River flows from Loveland Dam passing through Lake Emma, where the river bends west and runs parallel to Dehesa Road. The lake is fenced off and access is limited. At the western end of the lake is a golf club.
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This area is the northernmost part of Otay Ranch and the southern part of the San Diego National Wildlife Refuge. The scenic views of rolling hills and well-maintained trails make it a highly popular biking area.
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San Diego National Wildlife Refuge encompasses diverse habitats across 3,920 acres, providing a sanctuary for native plants and wildlife. Visitors can explore its trails, promoting conservation awareness and appreciation.
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Hollenbeck Canyon Wildlife Area provides a 6,100-acre wildlife corridor between Otay Mountain and the Jamul Mountains. This mainly includes coastal sage scrub, chaparral, oak woodlands, riparian forests, freshwater marshes, and grasslands. The height range hovers between a low of 750' to 2,100'. There are official designated hiking trails for visitors to hike.
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There are 18 touring cycling routes available in Granite Hills. These routes offer diverse terrain, with 5 considered moderate and 13 classified as difficult, providing options for various skill levels.
Touring cycling routes in Granite Hills are generally challenging. While there are 5 moderate routes, the majority (13 out of 18) are classified as difficult, often featuring significant elevation gains and varied terrain due to the granite formations.
You can expect diverse terrain characterized by granite formations, which lead to varied topography and significant elevation changes. Routes often wind through hills and along river valleys, offering both challenging climbs and scenic views. For example, the Sweetwater River loop from El Cajon leads through varied terrain with substantial climbs.
The touring cycling routes in Granite Hills are highly regarded by the komoot community, with an average rating of 4.75 stars from over 19 reviews. Cyclists often praise the challenging nature of the routes and the scenic views offered by the unique granite landscape.
Yes, many of the touring cycling routes in Granite Hills are loops. For instance, the popular San Diego National Wildlife Refuge loop from Spring Valley is a circular route, as are the Sweetwater River loop from Rancho San Diego and the Sweetwater River loop from El Cajon.
Along the touring cycling routes, you can explore various natural features and attractions. Many routes follow river trails, such as the Sweet Water River Trail or pass by the San Diego River Wetlands. You might also encounter landmarks like the historic Steele Canyon Bridge or enjoy views from elevated points like Dictionary Hill.
While many routes in Granite Hills are challenging, there are 5 moderate routes that might be more suitable for less experienced touring cyclists or families looking for a less strenuous ride. However, it's important to note that even moderate routes in this region can still feature some elevation changes.
Elevation gains on touring cycling routes in Granite Hills can be substantial. For example, the Sweetwater River loop from Rancho San Diego features over 1,100 meters of ascent, and the San Diego National Wildlife Refuge loop from Spring Valley has nearly 600 meters of climbing.
Yes, opportunities for wildlife spotting exist, particularly along river trails like those near the San Diego River. Areas such as the San Diego National Wildlife Refuge, which the San Diego National Wildlife Refuge loop from Spring Valley traverses, are known for their natural habitats.
Absolutely. Granite Hills offers elevated vantage points with extensive vistas. For instance, Dictionary Hill provides panoramic views of Spring Valley and the wider San Diego area. Many routes winding through the granite formations also offer scenic glimpses of surrounding landscapes and river valleys.
The longest touring cycling route is the Coastal Rail Trail – Leisure Lagoon loop from Santee Town Center, which spans approximately 112 kilometers (70 miles). This difficult route also includes significant elevation gain.
Yes, some routes offer glimpses of historical interest. For example, the historic Steele Canyon Bridge, no longer used for vehicles, is a notable landmark that can be explored in the area.
The duration varies significantly depending on the route's length and difficulty. For example, the San Diego National Wildlife Refuge loop from Spring Valley typically takes about 2 hours and 34 minutes, while the longer Sweetwater River loop from Rancho San Diego can take around 4 hours and 50 minutes.


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