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Routes
Mountain biking trails
United States
California
Sonoma County
Santa Rosa

Lake Ilsanjo – Warren Richardson Trail loop from Montgomery Village

Routes
Mountain biking trails
United States
California
Sonoma County
Santa Rosa

Lake Ilsanjo – Warren Richardson Trail loop from Montgomery Village

Moderate

4.9

(8540)

8,541

riders

Lake Ilsanjo – Warren Richardson Trail loop from Montgomery Village

02:25

34.3km

380m

Mountain biking

Moderate mountain bike ride. Good fitness required. Advanced riding skills necessary. The starting point of the route is accessible with public transport.

Last updated: July 1, 2026

Tips

Includes a segment in which cycling is not permitted

After 26.7 km for 170 m

Waypoints

A

Start point

Bus stop

Get Directions

1

7.38 km

Bobcat / Belly Button Trailhead

Highlight • Trail

Trail around the southern perimeter of Annadel State Park to Bennet Mountain

Tip by

2

8.82 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

10.2 km

Warren Richardson Trail

Highlight (Segment) • Trail

The Warren Richardson Trail is a gravel and dirt path that begins at the main entrance on the eastern side of the park. It ascends to the summit of the …

Tip by

4

29.9 km

North Loop bike trail, Santa Rosa Reservoir

Highlight (Segment) • Cycleway

Excellent dedicated car-free bike trail around the Santa Rosa Reservoir. Also mostly pedestrian-free, as there are parallel hiking trails around the lake.

Tip by

5

30.1 km

Paved trail around reservoir

Highlight • Trail

Well maintained paved trail that runs along the border of the reservoir. The trail is popular with walkers, runners, and cyclists, so make sure to be respectful to other trail users!

Tip by

6

30.3 km

Several trails off the loop lead closer to the water. The north shore is less busy.

Tip by

7

30.7 km

Santa Rosa Creek Reservoir

Highlight • Lake

Reservoir at the foot of Annadale State Park with a great trail system around the lake, connecting into the large park, and on trails into Santa Rosa along creeks.

Tip by

B

34.3 km

End point

Bus stop

Loading

Way Types & Surfaces

Way Types

15.0 km

8.42 km

7.23 km

3.40 km

231 m

106 m

Surfaces

16.6 km

5.96 km

5.55 km

4.19 km

1.46 km

578 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 15 July

37°C

14°C

0 %

Additional weather tips

Max wind speed: 25.0 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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4.0

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Cobblestone, Canyon, Marsh, Ridge, South Burma, & Warren Richardson Trails loop

02:32h

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