Bay Area Ridge Trail: Spring Lake to Trione-Annadel State Park

You can typically find parking at Spring Lake Park, which serves as a common starting point for this section of the Bay Area Ridge Trail. Specific trailhead access points within the park will lead you to the route.

This 10.8-mile one-way trail offers a diverse experience, gradually ascending grassy hillsides, traversing oak woodlands, and entering conifer forests. The terrain includes both wide, rocky service roads and singletrack paths. It involves a gradual climb with an elevation gain of approximately 1,120 feet and a loss of 955 feet. While some consider it easy to intermediate, komoot rates the overall hike as difficult due to its length and elevation changes.

Spring is an excellent time to visit, as Trione-Annadel State Park boasts a variety of wildflowers, including woodland star, iris, lupines, and blue-eyed grass. While west and south-facing slopes can get warm in summer, north and east-facing sections offer shade. Fall also provides pleasant hiking conditions.

The provided information does not specify dog regulations for this particular segment. It's always best to check the official websites for Spring Lake Park and Trione-Annadel State Park for current rules regarding dogs, including leash requirements and restricted areas, before you go.

Trione-Annadel State Park typically has day-use fees for parking. You can find detailed information on fees and any potential permit requirements by visiting the official California State Parks website at ca.gov.

You'll pass by Spring Lake Park and Spring Lake Park itself, as well as the West Saddle Dam. The trail also features the lush Ledson Marsh and leads into Trione-Annadel State Park, known for its rolling hills, volcanic rock formations, and Lake Ilsanjo. You might even spot shiny black shards of obsidian on the trails.

During spring, Trione-Annadel State Park is vibrant with wildflowers like woodland star, iris, linanthus, lupines, blue-eyed grass, and goldenfields. Hikers should be aware of potential wildlife such as rattlesnakes, mountain lions, and ticks. Poison oak is also present in the area.

Yes, this route is part of the larger Bay Area Ridge Trail - 01 - North Bay. It also passes through sections of the Ridge Trail, Lawndale Trail, Marsh Trail, and Canyon Trail within the park system.

Given its 10.8-mile length and 'difficult' rating by komoot, this specific one-way segment might be challenging for younger children or families looking for a shorter, easier outing. However, Trione-Annadel State Park offers over 40 miles of multi-use trails, many of which are considered moderate in length and difficulty, so shorter, more family-friendly options might be available within the park.

Given the varied terrain and potential for warm conditions on exposed slopes, wear comfortable hiking shoes, layers of clothing, and bring plenty of water. Sun protection (hat, sunscreen) is advisable, especially during warmer months. Consider bringing a map or GPS device, as well as snacks for the longer distance.

This specific segment of the Bay Area Ridge Trail from Spring Lake to Trione-Annadel State Park is described as a one-way trail, meaning it is not a loop. You would need to arrange transportation for a pick-up at the other end or plan to hike it as an out-and-back, which would double the distance.