With nearly 10 miles of trails, Spring Lake is one of Sonoma County's most popular walking and hiking destinations. The paved Spring Lake Loop is an easy circuit around the lake. Hikes can be extended by connecting to trails in adjacent Trione-Annadel State Park to the east and the city of Santa Rosa's Howarth Park to the west.  

The main trail is a 2.3-mile paved loop around the lake with views of forested hillsides. The trail is wide, with plenty of room for side-by-side walking and cycling, and is ADA accessible. The elevation is mostly flat, with a brief incline to the main dam. 

Unpaved trails such as Fisherman’s Trail and the Horse Loop intertwine with the paved trail and offer less-traveled routes around the lake. These trails are well worth exploring for a more solitary experience.

Restrooms and drinking fountains are near the swimming lagoon.