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Hiking trails & Routes
United States
California
Sonoma County
Santa Rosa

Lake Ilsanjo Loop — Annadel State Park

Routes
Hiking trails & Routes
United States
California
Sonoma County
Santa Rosa

Lake Ilsanjo Loop — Annadel State Park

Intermediate

5.0

(1)

10

hikers

Lake Ilsanjo Loop — Annadel State Park

02:23

8.30km

200m

Intermediate hike. Good fitness required. Easily-accessible paths. Suitable for all skill levels. The starting point of the route is right next to a parking lot.

Last updated: July 23, 2024

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Waypoints

A

Start point

Parking

Get Directions

1

4.55 km

Lake Ilsanjo

Highlight • Lake

Lake Ilsanjo is a hidden gem in Annadel State Park: it's a small, quiet lake. There are many trails and even some swimming spots.

Tip by

2

5.79 km

Warren Richardson Trail

Highlight (Segment) • Trail

This trail leads to Lake Ilsanjo. If combined with Canyon Trail it reaches Spring Lake. Along the way you will find beautiful scenery!

Tip by

B

8.30 km

End point

Parking

Way Types & Surfaces

Way Types

5.32 km

2.98 km

< 100 m

Surfaces

5.32 km

1.72 km

1.19 km

< 100 m

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Elevation

Elevation

Highest point (290 m)

Lowest point (120 m)

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Weather

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Today

Thursday 30 October

23°C

10°C

0 %

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How to understand each route’s difficulty level

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Easy
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Corresponds approx.to SAC 1.
Intermediate
Up to 5 hours and 3,000 ft. of elevation gain. Requires good fitness.Mostly accessible paths. Sure-footedness required.
Corresponds approx. to SAC 2-3.
Expert
More than 5 hours long or 3000 ft. of elevation gain. Requires very good fitness.Sure-footedness, sturdy shoes and alpine experience required.
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How to understand each route’s difficulty level

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Easy
Up to 2 hours and 1,000 ft. of elevation gain. Great for any fitness level.Easily-accessible paths. Suitable for all skill levels.
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Intermediate
Up to 5 hours and 3,000 ft. of elevation gain. Requires good fitness.Mostly accessible paths. Sure-footedness required.
Corresponds approx. to SAC 2-3.
Expert
More than 5 hours long or 3000 ft. of elevation gain. Requires very good fitness.Sure-footedness, sturdy shoes and alpine experience required.
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Technical difficulty rating based on the Swiss Alpine Club (SAC) Hiking Scale.
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How to understand each route’s difficulty level

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Expert
More than 5 hours long or 3000 ft. of elevation gain. Requires very good fitness.Sure-footedness, sturdy shoes and alpine experience required.
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Up to 2 hours and 1,000 ft. of elevation gain. Great for any fitness level.Easily-accessible paths. Suitable for all skill levels.
Corresponds approx.to SAC 1.
Intermediate
Up to 5 hours and 3,000 ft. of elevation gain. Requires good fitness.Mostly accessible paths. Sure-footedness required.
Corresponds approx. to SAC 2-3.
Expert
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How to understand each route’s difficulty level

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Mountain Bike

Road Bike

Running

Easy
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Intermediate
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How to understand each route’s difficulty level

Hiking

Bike

Mountain Bike

Road Bike

Running

Easy
Up to 2 hours and 1,000 ft. of elevation gain. Great for any fitness level.Easily-accessible paths. Suitable for all skill levels.
Corresponds approx.to SAC 1.
Intermediate
Up to 5 hours and 3,000 ft. of elevation gain. Requires good fitness.Mostly accessible paths. Sure-footedness required.
Corresponds approx. to SAC 2-3.
Expert
More than 5 hours long or 3000 ft. of elevation gain. Requires very good fitness.Sure-footedness, sturdy shoes and alpine experience required.
Corresponds approx. to SAC 4–6.
Technical difficulty rating based on the Swiss Alpine Club (SAC) Hiking Scale.
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How to understand each route’s difficulty level

Hiking

Bike

Mountain Bike

Road Bike

Running

Easy
Up to 2 hours and 1,000 ft. of elevation gain. Great for any fitness level.Easily-accessible paths. Suitable for all skill levels.
Corresponds approx.to SAC 1.
Intermediate
Up to 5 hours and 3,000 ft. of elevation gain. Requires good fitness.Mostly accessible paths. Sure-footedness required.
Corresponds approx. to SAC 2-3.
Expert
More than 5 hours long or 3000 ft. of elevation gain. Requires very good fitness.Sure-footedness, sturdy shoes and alpine experience required.
Corresponds approx. to SAC 4–6.
Technical difficulty rating based on the Swiss Alpine Club (SAC) Hiking Scale.
Intermediate

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