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Sonoma County

Trione-Annadel State Park

The best running trails in Trione-Annadel State Park

4.0

(2)

588

runners

64

runs

Jogging in Trione-Annadel State Park offers access to a diverse landscape spanning over 5,000 acres, characterized by open grassy hillsides, dense chaparral, and extensive oak woodlands. The park features volcanic rock formations and the central Lake Ilsanjo, providing varied terrain for running. Its extensive trail system includes single tracks and wider service roads, catering to different preferences and fitness levels. The hilly terrain ensures a dynamic and engaging experience for runners.

Best jogging routes in Trione-Annadel State Park

  • The most…

Last updated: October 25, 2026

30

runners

#1.

Lake Ilsanjo – Lake Ilsanjo loop from Spring Lake Park

10.4km

01:15

160m

160m

Moderate run. Good fitness required. Mostly paved surfaces.

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Moderate

Moderate run. Good fitness required. Mostly paved surfaces.

Moderate
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Hard run. Very good fitness required. Mostly paved surfaces.

Hard

10

runners

Moderate run. Good fitness required. Mostly paved surfaces.

Moderate

Hard run. Very good fitness required. Mostly runnable paths. Some sure-footedness required.

Hard
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Popular around Trione-Annadel State Park

Hiking in Trione-Annadel State Park

MTB Trails in Trione-Annadel State Park

Cycling in Trione-Annadel State Park

Road Cycling Routes in Trione-Annadel State Park

Tips from the Community

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

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This trail consists of rocky terrain and features a gradual incline that guides you to Lake Ilsanjo. Along the path, you'll find a bench that provides a convenient spot for a brief pause, allowing you to take in the surrounding scenery.

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Tyler Sanders
August 22, 2023, Canyon Trail

The trail is primarily smooth, with occasional rocky segments. It starts with a relatively flat terrain before gradually gaining elevation towards the end. There are plenty of chances to prolong your hike on this trail.

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Sorcerer V
April 9, 2023, Ridge Trail

switchbacks need some consideration

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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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Gentle eastern slope of Canyon trail, a mostly smooth gravel fire road hugging the west side of Annadel State Park with a few rocky sections. It proceeds to climb into the hilly parts of the park, bikeable with most bikes.

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Traveler
April 30, 2022, Lake Ilsanjo

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.

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Frequently Asked Questions

How many running routes are available in Trione-Annadel State Park?

Trione-Annadel State Park offers a wide selection of running routes, with over 60 different trails to explore. These routes cater to various fitness levels, including easy, moderate, and difficult options.

What kind of terrain can I expect on the jogging trails in Trione-Annadel State Park?

The park features a diverse terrain, including open grassy hillsides, dense chaparral, and extensive northern oak woodlands. You'll also encounter volcanic rock formations and trails winding around Lake Ilsanjo. The trails range from single tracks to wider service roads.

Are there any easy running routes suitable for beginners or families in Trione-Annadel State Park?

Yes, Trione-Annadel State Park has 5 easy running routes. While specific family-friendly routes are not detailed, the park's easy trails are generally up to 3 miles with around 330 feet of elevation gain, making them suitable for less strenuous jogs.

What natural features or landmarks can I see while running in Trione-Annadel State Park?

Runners can enjoy diverse natural beauty, including the picturesque Lake Ilsanjo, which is a focal point for many routes. You might also encounter the seasonal Ledson Marsh, vibrant wildflowers in spring, and even waterfalls and rushing creeks during the rainy winter months. The park is also home to ancient oak woodlands and unique volcanic rock formations.

Are there any loop running routes in Trione-Annadel State Park?

Yes, many routes in the park are loops, allowing you to start and finish at the same point. For example, the Lake Ilsanjo loop from Bennett Valley is a popular moderate option that circles the lake, offering varied scenery.

When is the best time of year to go running in Trione-Annadel State Park?

The park offers beauty year-round. Spring and early summer are ideal for experiencing abundant wildflowers, especially around Lake Ilsanjo. During the rainy winter, you can enjoy the sight of waterfalls and rushing creeks. The diverse ecosystems and changing landscapes make it a great destination in any season.

What do other runners say about their experience in Trione-Annadel State Park?

The running routes in Trione-Annadel State Park are highly rated by the komoot community, with an average score of 4.0 stars. Runners often praise the park's diverse terrain, the beauty of the oak woodlands, and the scenic routes around Lake Ilsanjo.

Are there any challenging running trails for experienced runners?

Absolutely. Trione-Annadel State Park features 20 difficult running routes designed for experienced runners. These trails often exceed 10 miles or 1000 feet of elevation gain, demanding a high level of fitness. An example is the Ridge Trail – Canyon Trail east loop from Spring Lake Park, which covers over 22 km with significant elevation.

Is there parking available at Trione-Annadel State Park for runners?

Yes, parking is available at Trione-Annadel State Park. Many routes, such as those starting from Spring Lake Park or Bennett Valley, have designated parking areas to access the trailheads.

Can I reach Trione-Annadel State Park using public transport?

While the park is primarily accessed by car, there are public transportation options to Santa Rosa. For specific bus routes to Trione-Annadel State Park, it's advisable to check local Santa Rosa bus schedules.

What kind of wildlife might I see while running in the park?

Trione-Annadel State Park is home to abundant wildlife. Runners might spot black-tailed deer, western gray squirrels, coyotes, and a variety of bird species. If you're lucky, you might even catch a glimpse of the rare California red-legged frog near Ledson Marsh during the winter months.

Are there specific trails known for scenic views or viewpoints?

Many trails offer scenic views across rolling hills and through the oak woodlands. Routes that incorporate Lake Ilsanjo, such as the Lake Ilsanjo loop from Bennett Valley, provide picturesque lakeside vistas. The higher elevation trails also offer expansive views of the surrounding landscape.

Most popular routes in Trione-Annadel State Park

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