4.0
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476
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.
Last updated: May 12, 2026
13
runners
8.39km
01:05
190m
190m
Moderate run. Good fitness required. Mostly accessible paths. Some sure footedness required.
12
runners
17.6km
02:11
350m
350m
Hard run. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.

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8
runners
3.64km
00:24
30m
30m
Easy run. Great for any fitness level. Mostly paved surfaces. Suitable for all skill levels.
10
runners
19.7km
02:31
420m
420m
Hard run. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
7
runners
Moderate run. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.
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Popular around Trione-Annadel State Park
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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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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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 main ridge, then gently descends to the scenic Lake Ilsanjo, located near the park's center. It's one of the most scenic trails the park offers.
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Trail around the southern perimeter of Annadel State Park to Bennet Mountain
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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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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.
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Shallow lake with wide sandy beach next to Spring Lake, with food concessions, showers
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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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.


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