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Sonoma County

Trione-Annadel State Park

Routes
Hikes
Sonoma County

Trione-Annadel State Park

The best dog-friendly hikes and walks in Trione-Annadel State Park

4.8

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812

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Dog friendly hiking trails in Trione-Annadel State Park traverse a diverse landscape of northern oak woodlands, grasslands, and chaparral, set amidst rolling hills and distinctive volcanic rock formations. The park features seasonal waterways that lead to small waterfalls during winter, and vibrant wildflower displays in spring. Lake Ilsanjo, a 26-acre man-made lake, is a central feature, with many routes offering lakeside views. This varied topography provides a range of experiences for hikers and their dogs.

Best dog friendly hiking trails…

Last updated: May 14, 2026

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hikers

#1.

Bay Area Ridge Trail: Spring Lake to Trione-Annadel State Park

22.2km

06:10

430m

370m

Hard hike. Very good fitness required. Easily-accessible paths. Suitable for all skill levels.

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Hard

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

Easy
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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

mtm05005
May 13, 2025, Paved trail around reservoir

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!

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Spring Lake Park is a 320-acre park that has miles of trails, a large reservoir, and a beach. There is a paved path that loops around the reservoir, as well as some single and double track.

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The Santa Rosa Creek Reservoir is a popular outdoor destination in Santa Rosa. The reservoir was created by a nearby dam.

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mtm05005
May 13, 2025, Ridge Trail

The Ridge Trail is a popular trail in Trione-Annadel State Park. The flowy single track follows a ridge as it leads you up some switchbacks.

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This expansive 138-acre community park offers ample parking and restrooms and is a popular starting and ending point for local cyclists. There are plenty of outdoor activities, with the park boasting serene Lake Ralphine for fishing and boating, a softball field, tennis and pickleball courts, inviting picnic areas, and innovative playground structures. There is also a small amusement area with train rides for kids. It is a great gathering spot for families, with miles of trails to explore.

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Summer
October 7, 2023, West Saddle Dam

this area is surrounding and trail deer came from

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

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Traveler
August 23, 2023, Spring Lake Park

Leafy park along the west shore of the large Santa Rosa Creek Reservoir, with good running trails around the water and through the meadows and shaded groves

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Frequently Asked Questions

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

Trione-Annadel State Park offers a variety of dog-friendly hiking experiences, with over 8 routes detailed in this guide. These trails range from easy strolls to more challenging treks, ensuring there's something for every dog and owner.

What are the typical trail conditions for dog-friendly hikes in Trione-Annadel State Park?

The park features diverse terrain, including northern oak woodlands, grasslands, chaparral, and areas with Douglas fir. You'll encounter rolling hills and distinctive volcanic rock formations. Trails can vary from relatively flat paths to routes with significant elevation gain. During winter, seasonal streams may appear, and spring brings vibrant wildflowers.

Are there any easy dog-friendly trails suitable for beginners or older dogs?

Yes, there are several easy dog-friendly options. For a gentle walk, consider the Howarth Memorial Park – West Saddle Dam loop from Montgomery Village, which is relatively short and flat. Another accessible option is the Lake Ralphine Loop via Sullivan Ridge and Spring Lake Trail, offering pleasant lakeside views.

Can I find challenging dog-friendly hikes in the park?

Absolutely. For a more strenuous adventure with your dog, the Bay Area Ridge Trail: Spring Lake to Trione-Annadel State Park offers a longer distance and significant elevation gain, providing a rewarding challenge.

What is the best time of year to visit Trione-Annadel State Park with my dog?

Spring (April-May) is particularly beautiful, as the park transforms with abundant wildflower blooms, especially around Lake Ilsanjo. The cooler months of fall and winter are also excellent for hiking, though seasonal streams will be more active. Summer can be warm, so plan early morning or late afternoon hikes during this season.

Are there dog-friendly loop trails in Trione-Annadel State Park?

Yes, the park offers several loop options that are great for dogs. The Howarth Memorial Park – West Saddle Dam loop from Spring Lake Park is a good example, allowing you and your dog to return to your starting point without retracing your steps.

What can I see along the dog-friendly hiking trails in Trione-Annadel State Park?

Many trails offer views of Lake Ilsanjo, a central attraction. You can also explore historical sites like the Wymore Quarry via the Cobblestone Trail. The park's diverse ecosystems mean you'll encounter varied woodlands and open grasslands, with opportunities for wildlife viewing.

What kind of wildlife might I encounter on dog-friendly trails?

Trione-Annadel State Park is home to various wildlife. Commonly sighted animals include black-tailed deer, western gray squirrels, and coyotes. The seasonal Ledson Marsh provides habitat for over 130 bird species. While rare, bobcats and mountain lions are occasionally seen, so always keep your dog on a leash and be aware of your surroundings.

Are there any specific rules for dogs in Trione-Annadel State Park?

Dogs are generally welcome on trails in Trione-Annadel State Park but must be kept on a leash at all times. Always remember to pack out any waste and ensure your dog has plenty of water, especially on longer hikes.

What do other hikers enjoy the most about hiking in Trione-Annadel State Park?

The area is highly rated by the komoot community, with an average score of 4.9 stars. Reviewers often praise the park's extensive and varied trail system, the beautiful natural scenery, and the peaceful atmosphere, making it a favorite for both human and canine adventurers.

Are there any trails that offer viewpoints or scenic overlooks for dogs and their owners?

While specific named viewpoints aren't highlighted, the park's rolling hills and diverse terrain, including the Ridge Trail, naturally offer elevated sections with expansive views over the surrounding woodlands and valleys, especially during clear weather.

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