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Mountain biking trails

Otay Reservoir Dam – Sweetwater River loop from Massachusetts Avenue

Routes

Mountain biking trails

Otay Reservoir Dam – Sweetwater River loop from Massachusetts Avenue

Hard

4.8

(8555)

8,556

riders

Otay Reservoir Dam – Sweetwater River loop from Massachusetts Avenue

05:22

78.5km

800m

Mountain biking

Hard mountain bike ride. Very good fitness required. Suitable for all skill levels. The starting point of the route is accessible with public transport.

Last updated: June 15, 2026

Tips

Your route passes through protected areas

Please check local regulations for:

San Diego National Wildlife Refuge

San Diego Bay National Wildlife Refuge

Waypoints

Start point

Train Station

Get Directions

26.3 km

Proctor Valley Natural Resource Area

Highlight • Natural Monument

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.

Tip by

27.2 km

Upper Otay Reservoir

Highlight • Lake

The Upper Otay Reservoir is a freshwater reservoir in San Diego County. It is surrounded by picturesque landscapes and offers opportunities for fishing, boating, bird watching, and different recreational activities …

Tip by

27.9 km

Otay Reservoir Dam

Highlight • Monument

Fun Easy Ride

Tip by

29.9 km

View of the Otay Mountain Wilderness from the Lower Otay Reservoir

Highlight (Segment) • Viewpoint

The trails near the northern part of Lower Otay Reservoir offer great views towards the Otay Mountain Wilderness area. The reservoir is a common spot for runners and hikers with Otay Mountain as the backdrop.

Tip by

61.0 km

Sweetwater River

Highlight • River

The Sweetwater River starts high in the Cuyamaca Mountains. The name "Sweetwater" originates from the olden days when people would generally refer to a fresh water river as a sweet …

Tip by

64.8 km

Sweetwater Bikeway Tunnel

Highlight • Bridge

This cool tunnel skirts under the road. The path switches from the Sweetwater Bikeway to the Sweetwater Park Trail shortly after passing under the tunnel (headed north).

Tip by

65.0 km

Sweetwater County Park

Highlight • MTB Park

Sweetwater Bike Park offers a variety of features for mountain bikers of all skill levels, including four jump lines ranging from beginner to expert, a kid's pump track, a skill zone, two flow trails, and a perimeter trail.

Tip by

67.7 km

Sweetwater Park Trail

Highlight (Segment) • Trail

Within Sweetwater Regional Park, Sweetwater Park Trail winds throughout peaceful surroundings of native flora. Keep in mind that it can get quite muddy If you're visiting after a rain.

Tip by

78.5 km

End point

Train Station

Way Types & Surfaces

Way Types

38.1 km

14.2 km

13.1 km

9.36 km

2.88 km

819 m

143 m

Surfaces

43.3 km

20.1 km

6.45 km

3.83 km

3.39 km

1.39 km

Elevation

Nothing selected – click and drag below to see the stats for a specific part of the route.

Highest point (320 m)

Lowest point (0 m)

Weather

Wednesday 29 July

28°C

19°C

0 %

Additional weather tips

Max wind speed: 19.0 km/h

to get more detailed weather forecasts along your route

Comments

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Our route recommendations are based on thousands of hikes, rides, and runs completed by other people on komoot.

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Otay Reservoir Dam – Sweetwater River loop from Massachusetts Avenue

Proctor Valley Natural Resource Area

Upper Otay Reservoir

Otay Reservoir Dam

View of the Otay Mountain Wilderness from the Lower Otay Reservoir

Sweetwater River

Sweetwater Bikeway Tunnel

Sweetwater County Park

Sweetwater Park Trail

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