Trione-Annadel State Park

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👍

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.

Well maintained
... really nice park. Expansive trail network. Feels like your a long way from Rosa. Good place to get away

Such a wonderful area. Trails for walking, hiking, running, cycling.

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.

This is a beautiful park with nice trails and amazing views. Bursting with life, this park is bound to leave you breathless one way or another.
I don't hike as much as I would like too, so my stamina isn't the best. That being said, I didn't struggle at all while hiking around sunset. Lots of trees cover most of the path and there are also some benches placed along the way.
Great place for a solo hiking or to take the kids.

Great mountain biking trails. Rode up Richardson trail at end of channel dr. to Lake Ilsanjo, then left after the dam to spring creek trail. Easy ride down, rocky, but not steep at all.

You can get there through numerous trails,even from Howard Park or Spring Lake. Either trail takes you through awesome scenery and plenty of chances to observe wildlife. The lake itself is beautiful. There are lots of areas with picnic tables, and fishing, not to mention swimming. But beware of the poison oak! It grows rampant there. Also use insect repellent and sunscreen. The ticks and mosquitoes are plentiful. There are no lifeguards there and you do have to watch out for bikers and horses.

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.

The best! Annadel offers a diverse mix of technical single-track, flowy trails and gravel-friendly fire roads. It's great whether you're looking for a quick exercise session or an all-day excursion. And it's proximity to Spring Lake and Howarth Park expands the experience with swimming fishing and camping! Bike, hike, equestrian friendly park on the edge of Santa Rosa.

Massive local park. Plenty of great trails and off road space to explore. Seemed like a popular mountain biking destination. Surprisingly not crowded. Would recommend for any level of hiker

Beautiful, large and a variety of terrains and path difficulty barked on what you want. Some nice areas of water as well. 10 out of 10 would hike again.

Beautiful trail, amazing views, loved the trees. The only thing didn't like was the last mile, it was on the road. Besides that was such a great walk

Took cobblestone trail loop from Channel Dr. Great easy to moderate hike. Almost 5 miles and 550' elevation gain. Mostly shaded until the meadow at the top. Beautiful

I never get tired of coming here! Awesome Mountain Biking trails! Watch out for the poison oak! It's everywhere so stay on the trails!

Today I hike around whole lake llsanjo, Spring lake and lake Ralphine. Very very becautiful! spring green view, Lots animal friends all over the mountain and lake.

Great place to walk and hike. Many times you see wildlife such as deer, turkeys, etc. Can be kind of busy with bikes but everyone is considerate and polite.

Excellent place to relax, hike, bike, horse back ride and explore. Friendly staff of Rangers to insure safety and make sure posted rules are followed. Always read park rules so everyone can have a good day!!!

Love this park! What a blessing we have a beautiful park right at the edge of town that feels like getting away from it all without driving a long way. Check out all the trails in the eastern side of the park, up the Creek trail or Rough Go trail. At the top there are beautiful meadows and mountain vistas, with no crowds. And wow, the sunsets are gorgeous in the winter!

One of my favorite parks in the entire Bay area! Awesome trails and tons of great trees and plants.