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United States
California
Sonoma County

Trione-Annadel State Park

Easy hikes and walks in Trione-Annadel State Park

4.8

(35)

804

hikers

104

hikes

Hiking in Trione-Annadel State Park offers access to a diverse landscape characterized by northern oak woodlands, grasslands, and chaparral. The park features rolling hills and volcanic rock formations, remnants of its geological past, providing varied topography. Central to the park is Lake Ilsanjo, a 26-acre man-made lake, which serves as a focal point for many routes. This ecological variety supports a wide array of wildlife and offers hikers ever-changing scenery.

Best easy hiking trails in Trione-Annadel State Park

  • The most…

Last updated: May 12, 2026

4

hikers

#1.

Channel, North Burma, and Warren Richardson Loop

5.73km

01:42

170m

160m

Easy hike. Great for any fitness level. Easily-accessible paths. Suitable for all skill levels.

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Easy

Easy hike. Great for any fitness level. Easily-accessible paths. Suitable for all skill levels.

Easy
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5.0

(1)

13

hikers

Easy hike. Great for any fitness level. Easily-accessible paths. Suitable for all skill levels.

Easy

Easy hike. Great for any fitness level. Easily-accessible paths. Suitable for all skill levels.

Easy

Easy hike. Great for any fitness level. Easily-accessible paths. Suitable for all skill levels.

Easy
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Tips from the Community

Traveler
August 24, 2023, Bobcat / Belly Button Trailhead

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

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Hiking trail to get off the wide forest road

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Get off the wide forest road onto the quieter hiking trails

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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.

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Warren Richardson is the main, gradual gravel-paved fire road to the Lake Ilsanjo saddle from the north side of the park. Very pleasant riding in the shade of tall pine and fir trees.

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Northern bike trail access to the main park road around the northern end of Annadel State Park

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Diana
April 14, 2022, Lake Ilsanjo

Lake Ilsanjo is a hidden gem in Annadel State Park! There are lots of trails that take you up to the lake. It is also a great spot for a swim!

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1

Diana
April 14, 2022, Cobblestone Trail

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

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Frequently Asked Questions

How many easy hiking trails are available in Trione-Annadel State Park?

Trione-Annadel State Park offers a wide selection of easy hiking trails. There are 29 easy routes available, making up a significant portion of the park's extensive trail system.

What kind of terrain can I expect on easy hikes in Trione-Annadel State Park?

Easy hikes in Trione-Annadel State Park feature diverse terrain, including northern oak woodlands, open grasslands, and chaparral. You'll encounter rolling hills and volcanic rock formations, providing varied scenery without significant elevation challenges. Trails often loop around scenic areas like Lake Ilsanjo.

Are there any family-friendly easy hikes in Trione-Annadel State Park?

Yes, many easy trails in Trione-Annadel State Park are suitable for families. Routes like the Spring Lake Park – Spring Lake Park loop offer gentle paths and scenic views, perfect for outings with children. The park's diverse ecosystems also provide opportunities for wildlife spotting, which can be engaging for younger hikers.

Can I bring my dog on the easy hiking trails in Trione-Annadel State Park?

Trione-Annadel State Park has specific regulations regarding dogs. Generally, dogs are permitted on paved roads and in developed areas, but not on unpaved trails or in the backcountry. It's always best to check the latest park rules on the official California State Parks website for current guidelines regarding pets: parks.ca.gov.

What natural features or landmarks can I see on easy hikes?

Easy hikes in Trione-Annadel State Park offer access to several notable natural features. You can explore around Lake Ilsanjo, a central attraction, or discover sections of the Cobblestone Trail, which hints at the park's industrial past. During the rainy season, seasonal waterfalls and streams add to the park's beauty.

When is the best time of year to visit Trione-Annadel State Park for easy hikes?

The best time to visit Trione-Annadel State Park for easy hikes is from early spring to early summer, particularly April and May, when the park showcases vibrant wildflower displays around Lake Ilsanjo. Winter months bring seasonal waterfalls and lush greenery, while fall offers pleasant temperatures and changing foliage. Summers can be warm, so early mornings are recommended.

Are there any circular easy hiking routes in the park?

Yes, Trione-Annadel State Park features several excellent circular easy hiking routes. Popular options include the Lake Ilsanjo loop, which circles the scenic lake, and the Howarth Memorial Park – West Saddle Dam loop, offering varied parkland scenery.

What is the average duration for an easy hike in Trione-Annadel State Park?

The duration for easy hikes varies depending on the route and your pace. For example, the Spring Lake Park loop, at 2.3 miles (3.7 km), typically takes about 1 hour. Longer easy routes, like the Lake Ilsanjo loop (3.9 miles / 6.3 km), might take closer to 1 hour 45 minutes.

Is parking available for easy trail access in Trione-Annadel State Park?

Yes, parking is available at various access points to Trione-Annadel State Park. The park is conveniently located near Santa Rosa, and specific trailheads often have designated parking areas. Always check park signage for any parking fees or restrictions.

What wildlife might I encounter on an easy hike?

Trione-Annadel State Park's diverse habitats support a variety of wildlife. On easy hikes, you might spot black-tailed deer, western gray squirrels, coyotes, and various bird species such as western scrub jays and wild turkeys. The Ledson Marsh, though seasonal, is known to host over 130 bird species.

What do other hikers enjoy most about easy trails in Trione-Annadel State Park?

The easy trails in Trione-Annadel State Park are highly rated by the komoot community, with an average score of 4.8 stars. Reviewers often praise the park's diverse ecosystems, the tranquility of Lake Ilsanjo, and the well-maintained, interconnected trail system that allows for customized, enjoyable walks.

Are there any easy trails that offer views of Lake Ilsanjo?

Absolutely. The Lake Ilsanjo loop is a prime example, offering tranquil waterside views throughout its 3.9-mile (6.3 km) path. Many other trails also provide access to or scenic overlooks of the lake, which is a central feature of the park.

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