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Routes
Mountain biking trails
United States
California
Sonoma County
Santa Rosa

Lake Ilsanjo – Lake Ilsanjo loop from Spring Lake Park

Routes
Mountain biking trails
United States
California
Sonoma County
Santa Rosa

Lake Ilsanjo – Lake Ilsanjo loop from Spring Lake Park

Hard

4.7

(5379)

12,138

riders

Lake Ilsanjo – Lake Ilsanjo loop from Spring Lake Park

01:22

15.1km

260m

Mountain biking

Hard mountain bike ride. Great for any fitness level. Advanced riding skills necessary. Some portions of the route may require you to push your bike.

Last updated: July 1, 2026

Tips

Includes a segment in which cycling is not permitted

After 12.1 km for 79 m

Waypoints

A

Start point

Get Directions

1

4.97 km

Lake Ilsanjo

Highlight • Lake

Very pretty lake in the middle of Annadel State Park, great for a swim on a hot day. Access is best from Lake Trail with a small beach on the north-west side.

Tip by

2

5.19 km

Lake Ilsanjo

Highlight • Lake

Lake Ilsanjo is a small quiet lake near the top of Canyon trail. A hidden gem for a break or a swim. It is much quieter than Santa Rosa Reservoir …

Tip by

3

9.87 km

Cobblestone Trail

Highlight (Segment) • Trail

Cobblestone Trail is a great singletrack with lots of rocks and roots. This route is heavily trafficked, so keep your eyes peeled.

Tip by

4

12.2 km

Swimming Beach

Highlight • Beach

Great free swimming beach (if you walk or bike into Spring Lake Park).
Pleasant beach cafe and snack shack.
Given the number of geese and kids the water quality is probably better early in the season.

Tip by

B

15.1 km

End point

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Way Types & Surfaces

Way Types

7.15 km

5.42 km

1.58 km

946 m

< 100 m

Surfaces

5.50 km

4.91 km

2.63 km

1.11 km

973 m

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Elevation

Elevation

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

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Weather

Powered by Foreca

Today

Wednesday 12 August

24°C

11°C

0 %

Additional weather tips

Max wind speed: 13.0 km/h

to get more detailed weather forecasts along your route

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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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