Trione-Annadel State Park

Excellent mtb riding. Trails are getting dusty but still great traction. Get out early because it's June and the heat will kick in by noon

Online parking pass was super easy. Water available at trail head and maps posted around the park and small printed ones available at trail head. The trails are well maintained though rocky and technical for mountain biking or trail running.

NO DOGS ALLOWED. Please be respectful of this for health of wildlife and ecosystem. Lovely hike through oak woodlands and a variety of wildflowers. So nice to see the tadpoles in the small pond. Various levels of difficulty of hiking, but definitely lots of uphill. Lots of exposure in the sun but some cover in the oak. Woodlands. No parking fee at Cobblestone trail.

Great trails for hiking, biking or horseback riding. No dogs though. A mix of single track & fire gravel roads. Can be rocky. Mixed terrain w/ beautiful views, a lake, flowers, birds & creeks. Beware of the poisen oak! Simply, nature at it's best👍

Beautiful Day at Trione-Annadel State Park & Spring Lake We had a perfect weather day to explore Trione-Annadel and Spring Lake! The skies were clear, the temperature was just right — couldn’t have asked for better conditions for a hike. We were lucky enough to spot baby quails along the trail and even saw a baby goose near the lake — super cute and a great surprise for the kids. The trails were in great shape, and the scenery was beautiful as always. However, be careful — there is poison oak along some areas, especially if you’re going off the main paths. Keep an eye out if you have kids or pets with you. The only downside was that the kayak and boat rentals weren’t open at the scheduled 11 AM time on the Spring Lake side. We waited around, but no staff ever showed up, which was disappointing since we were really looking forward to it. Still, overall, a lovely day and a great experience. We’ll definitely be back — hopefully next time with boats on the water! —Chris M.

I love that we have so many hiking trails in Sonoma County to explore. There are a variety of trails to hike. A variety of landscaping is offered from for trees, a lake, ferns & creeks.

Stunning views and miles of trails! Great for a MTN bike ride, a trail run, or a hike. There's something fot everyone here. Some trails are definitely more technical than others, so plan accordingly. A wonderful trail network though and well maintained.

My absolute favorite place to hike any where in the country. So many different native plants and natural ecosystems. I love taking the Spring Creek Trail up to Lake Ilsanjo and taking a celebratory swim. Many miles of beautiful hiking in the rolling hills.