4.3
(26)
291
riders
19
rides
No traffic touring cycling routes in Trione-Annadel State Park traverse a diverse landscape characterized by northern oak woodlands, riparian areas, and grasslands. The park features over 40 miles of multi-use trails and fire roads, winding through open hillsides and wooded forests. Geological history is evident in volcanic rock formations, and the park is home to Lake Ilsanjo, a 26-acre man-made lake.
Last updated: May 14, 2026
12
riders
21.3km
01:19
120m
120m
Easy bike ride. Great for any fitness level. Mostly paved surfaces. Suitable for all skill levels.
7
riders
Easy bike ride. Great for any fitness level. Mostly paved surfaces. Suitable for all skill levels.

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3.0
(1)
6
riders
Easy bike ride. Great for any fitness level. Mostly paved surfaces. Suitable for all skill levels.
6
riders
13.1km
00:49
110m
110m
Easy bike ride. Great for any fitness level. Mostly paved surfaces. Suitable for all skill levels.
1.0
(1)
4
riders
9.20km
00:44
90m
90m
Easy bike ride. Great for any fitness level. Mostly paved surfaces. Suitable for all skill levels.
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Popular around Trione-Annadel State Park
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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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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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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Within this park, there are extensive miles of trails available for hiking, biking, and horseback riding. The landscape comes alive with an array of wildflowers, particularly vibrant during spring. Notably, Lake Ilsanjo stands as a park highlight, offering opportunities for fishing and often attracting anglers.
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There are over 20 dedicated no traffic touring cycling routes in Trione-Annadel State Park, offering a variety of experiences for different skill levels. You'll find 7 easy routes, 6 moderate routes, and 10 more challenging options.
For families looking for easier, traffic-free rides, consider routes like the Santa Rosa Swimming Lagoon – Howarth Memorial Park loop from Montgomery Village, which is just over 8 km. Another great option is the Spring Lake Park – Canyon Trail east loop from Montgomery Village, offering a pleasant 9.7 km ride.
Yes, many of the no traffic touring cycling routes in Trione-Annadel State Park are designed as loops. For example, the Spring Lake Park – Spring Lake Park loop from Los Guilicos offers a 21 km circular ride, and the Canyon Trail east – Santa Rosa Swimming Lagoon loop from Lake Ralphine is a 10.3 km loop.
Trione-Annadel State Park is rich in diverse ecosystems. Along the routes, you'll cycle through northern oak woodlands, riparian areas, Douglas fir forests, chaparral, and grasslands. During the rainy winter months, you might also encounter seasonal streams and small waterfalls. The park is also known for its vibrant wildflower displays from early spring to early summer.
Cyclists can explore several notable features. Lake Ilsanjo is a central attraction, offering scenic views. You might also pass by sections of the Canyon Trail or the historic Cobblestone Trail, which showcase the park's geological history.
The park is enjoyable year-round, but spring (April and May) is particularly beautiful due to the vibrant wildflower displays. Fall offers pleasant temperatures and changing foliage. While winter brings seasonal streams and waterfalls, some trails might be muddy after heavy rains. Summers are generally warm and dry.
Generally, electric-assist bikes (e-bikes) are not permitted on the trails within Trione-Annadel State Park. The routes are primarily designed for traditional bicycles, ensuring a truly 'no traffic' and natural cycling experience.
The no traffic touring cycling routes in Trione-Annadel State Park are highly rated by the komoot community, with an average score of 4.3 stars. Reviewers often praise the peaceful, car-free environment, the diverse natural scenery, and the well-maintained multi-use trails that wind through woodlands and open spaces.
Many trails offer scenic vistas, particularly those that climb to higher elevations or pass through open grasslands. The park's varied terrain provides views of oak woodlands, Lake Ilsanjo, and the surrounding Sonoma County landscape. Keep an eye out for viewpoints along the Ridge Trail for expansive panoramas.
Trione-Annadel State Park has several parking areas, including main entrances like the one off Channel Drive in Santa Rosa. These parking lots provide convenient access points to the extensive trail network, allowing cyclists to easily begin their no traffic touring adventures.
Dogs are generally permitted on leash on most trails within Trione-Annadel State Park. However, it's always best to check the specific regulations at the park entrance or on the official California State Parks website for any recent changes or specific trail restrictions regarding pets. For more detailed information, you can visit the official park page on ca.gov.


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