Ascend Trail Running

Train. Explore. Ascend.

Nestled in the picturesque coastal foothills of Sonoma County, Lake Sonoma is a hub of outdoor adventure surrounded by world-renowned vineyards and rich historical landscapes. Created in 1983 with the construction of Warm Springs Dam, the lake serves as a vital resource for flood control, irrigation, and recreation. With over 2,700 acres of surface area…

By

Scott Atchison

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Ascend Trail Maps: Lake Sonoma

Nestled in the picturesque coastal foothills of Sonoma County, Lake Sonoma is a hub of outdoor adventure surrounded by world-renowned vineyards and rich historical landscapes. Created in 1983 with the construction of Warm Springs Dam, the lake serves as a vital resource for flood control, irrigation, and recreation. With over 2,700 acres of surface area and 50 miles of shoreline when full, Lake Sonoma offers endless opportunities to explore. Visitors can enjoy hiking, swimming, boating, fishing, camping, horseback riding, and even hunting in designated areas. Dogs are welcome, making it an ideal destination for family outings and adventures with your four-legged friends. Whether you’re seeking a challenging trail or a peaceful day by the water, Lake Sonoma has something for everyone.

Trail Highlights

  • Distance: Options from 6 to 33 miles
  • Terrain: Rolling hills, technical sections, and open trails
  • Best For: Long-distance runners and race preparation

Parking and Facilities
Parking is available at the Visitor Center and various trailheads around the lake. Portable restrooms are available at key locations.

Grey Pine Trailhead

Parking lot entrance on Rockpile Road. Limited restroom availability.

Trail Map (Strava link)Length Elevation Gain
Flat 6 6 miles363 feet
Flattest Known Ten10.4 miles514 feet
Not as Flat 1111.0 miles1796 feet
(Click on hyperlinks for Strava & .GPX maps)

Lone Rock Trailhead

Parking lot entrance on Rockpile Road. Limited restroom availability.

Trail Map (Strava link)Length Elevation Gain
Lone Rock 109.5 miles1632 feet
Pond (& Puff)32.9 miles7262 feet
(Click on hyperlinks for Strava & .GPX maps)

Little Flat

Parking lot entrance on Rockpile Road. Limited restroom availability.

Trail Map (Strava link)Length Elevation Gain
Huff and Puff14.3 miles3122 feet
(Click on hyperlinks for Strava & .GPX maps)

South Lake Trailhead

Parking lot entrance on Overlook Road immediately off Stewart Skaggs Springs Road. Limited restroom availability.

Trail Map (Strava link)Length Elevation Gain
Pond Loop21.5 miles4454 feet
(Click on hyperlinks for Strava & .GPX maps)

Share Your Trail Adventures

Ready to contribute to our trail-running community? If you’ve mapped out a favorite route or have GPX files to share from your runs at Lake Sonoma or other Sonoma County trails, we’d love to feature them! Leave a comment below to share your maps and inspire others to explore these breathtaking trails:

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