Looking for a great trail in Annadel State Park, California? AllTrails has 19 great hiking trails, running trails, mountain biking trails and more, with hand-curated trail maps and driving directions as well as detailed reviews and photos from hikers, campers, and nature lovers like you. Ready for some activity? There are 15 moderate trails in Annadel State Park ranging from 3.4 to 14 miles and from 295 to 1,427 feet above sea level. Start checking them out and you'll be out on the trail in no time!

hiking

views

nature trips

no dogs

walking

bird watching

running

mountain biking

forest

wild flowers

wildlife

lake

kid friendly

Annadel State Park, located 60 miles north of San Francisco on the eastern edge of Santa Rosa, offers miles of trails for hiking, mountain biking, and trail riding. For wildflower lovers, Annadel Park offers a great variety of flowers from early Spring until early Summer, especially on a hike around Lake Ilsanjo. The best months to see the park's wildflowers are April and May, but there are some plants in bloom as early as January and as late as September. Dogs are not allowed on trails. Dogs are allowed on a leash under your control only on Channel Drive (a paved road) within the park. Lake Ilsanjo offers excellent fishing for black bass and bluegill. Black bass weighing nine pounds and more have been caught here. A purple plastic worm is a favored bait for the bass, while the bluegill favor garden worms, small crayfish, and grubs. If you are 16 years of age or older, you must have a California fishing license. Ledson Marsh dries up by late August or early September and so no fish are found there.

Great moderate hike, Fitbit clocked the route at 5.3 miles so not very off from the description. Will bring the kids next time.

Great loop of trails. Mix of shade under the redwoods, oak woodland, grassland, lake access and mixed trails use.

I loved this trail! Be patient. The beginning is a gravel fire road which is quite underwhelming but once you hit the forest it's just a beautiful hike. The length is the most challenging otherwise a fairly easy hike. Mixed terrain with some definite rocky areas but manageable. You'll share the hike with mountain bikers but the trail is wide and there's more than enough room for everyone. I saw several very tame deer (they literally jumped within 5 feet in front of and behind me on the trail like we were playing a game!), turkeys, and lots of birds and squirrels. I went on a weekday and there was minimal people on the trail. Took me about 2 hours 45 minutes including a rest by the lake. I'll be back!

Mostly shade, with gradual inclines. At this time of year it’s hot and very dusty.

Entered the trail head near the lagoon. You can take a single track trail on the left of the dry creek or take the fire road up the right side. The canyon trail is doable for most about 2/3 the way. The trail forks off right right across the creek bed and is pretty washed out. We walked our bikes up the last 1/4 of the trail to the lake- but it was worth it. Picnic tables and beautiful lakeside vista provided good shade to take a breather. The decent down the fire road provided some fun technical wash-out terrain perfectly suited for a beginner. Definitely worth the effort and goes into the record books as a great anniversary bike ride. Be sure to grab a beer or a glass of wine at the Otter Cafe and watch the dogs swim in the summer to celebrate!

well maintained. not too much traffic on a weekday.

Real nice climb up and ride down

hiking
bugs
over grown
1 month ago

I love this hike. lots of shade and wildlife

Very nice hike, moderate climb, shady areas Saw some deer, quail and found some blackberries along the trail.

on Annadel State Park North Loop Trail

hiking
1 month ago

Been hiking this park few times & I will be back !!

plenty of side trail to get a little lost on

hiking
rocky
2 months ago

hiking
bugs
rocky
2 months ago

Took my morning to complete the Trione-Annadel Half Marathon Course. What a blast this loop is, but also quite the rough go at times! Parking in the Spring Lake parking lot leads to a roughly half mile trail to begin the State Park. After the smooth, yet slightly uphill fire road it leads to a fork in the road, one leading to the Canyon trail and the other beginning the Rough Go trail. I chose left to continue up the Rough Go trail, and this is where things begin to get technical at certain sections. Many small rocks to avoid, and if one isn’t paying enough attention this could be an ankle roller. Its slightly uphill, but certainly enough to feel the burn, especially if attempting to keep a jogging pace throughout the journey. The Rough Go trail continues up the hill until you reach the Orchard Trail, a left turn that comes after a few forks in the road. Orchard will be a relief, as the rocks are not much of an issue at this point, and there is plenty of shade to keep you cool. It will drop you off on the Cobblestone trail after some slight downhill, and the name does not deceive. If you though Rough Go was rocky, your gonna hate cobblestone, and just about every foot strike has the opportunity of hitting rock. Thankfully i chose to tackle this one downhill, so it made for a fun game of don’t make a mistake! Cobblestone will lead you directly to another parking lot, one that appears to be a large shoulder off the road. Turning right on the paved road here takes you towards Richardson Trail, and the fun here is after a quarter mile or so there is a trail that follows the road, so although the road is quiet and not often travel by cars it gives you options of a smoother, more direct journey, or the adventure of the trail. Turning right at the end begins Richardson Trail, one that will crush your soul as you look up, and up, and up. Be sure to save some energy here, power hiking will be necessary as running will just burn you away. It continues up for a bit, until the blessed level trail appears and continues to dip up and down for a nice break on the legs. This will take you to the North Burma Trail, however theres a small shortcut that is tough to avoid taking as it cuts quite a bit of elevation in this section. Continue to the end of Richardson to find yourself in a large meadow, then take a sharp right to begin the start of Burma. It will guide you back the way you came, but along a lower level, giving you views of the meadow the entire time. My run this morning provided the adorable sight of baby Turkeys running along with their parents. The trail will curve around the meadow, gaining elevation at times, until you find yourself taking a sharp left at the Live Oak Trail. This is a quiet one, not travel much, and from what i can gather its most likely due to the end I emerge from doesn’t appear to be a trail, with no markers or trail names. Live oak will drop you off back on Rough Go Trail, but not the same one you had previously traveled. Although the trail conditions are similar to its twin, this time you will be taking it downhill all the way to the lake. This is a popular spot to stop and picnic, so its often busy. Cross the bridge and continue on the trail to find yourself at the start of the Canyon trail, which will eventually drop you back off where you began. This trail is often used by bikers, or casual walkers, as it is not rocky like the trails that got you here, so be sure to keep your head up and stay alert. Once at the fire road that began this whole journey, its just as bit more to the parking lot, but this part is rough as it is exposed, and seems to drag on longer that when you first took it. Overall a fantastic day out trail running, or hiking the northern section of the Trione-Annadel Park. This hike uses many popular trails, so on the right day you will see many people on your journey

hiking
3 months ago

Great until you reach pavement.

running
rocky
3 months ago

Two Quarry trail ranges from shaded to shady but has enough sun exposure that on a 70-degree morning, trail running gets hot! The steady (but usually not steep) incline makes for a good workout. Majority of the trail is rocky. I can envision doing this as a easy-ish hike. Heads up: If you click on the directions button from AllTrails and use Google Maps, it'll drop you at an incorrect location in the Oakview subdivision, so I'd use the Annadel State Park map to locate the start of the path for the Warren Richardson trailhead (bonus: services!) and plug that into your map app. Follow the Warren Richardson trail clockwise to the Two Quarry trail. (The Google Maps pinned location forces you westward to a connector path between the water reclamation district and the community garden; does not have services like water or restrooms; and adds about a half mile+ to the route. Oh, and it's *technically* private property; the active adults who live in the subdivision will wonder why you're there. Fun!) This parks' signage can be lacking, and the posted maps don't have "Your Are Here" stickers (look for the "i" with longitude/latiude to find where you are). It's helpful to orient yourself with a map to make sure you're going in the right direction toward Two Quarry trail. Any confusion or even taking a wrong turn is worth it though—a very pretty park.

hiking
3 months ago

My Alltrails app clocked this as 7.6 miles, without our going as far around the marsh as this track shows, so note that it is a longer trail. This time of year it can be hot, but we picked a cooler day. Lots of shade after the first half mile, but when you get to the top and head down towards the marsh, it is very exposed and hot. And much harder to walk on at the top, lots of broken rock. We should have turned back once we got to the top. Lots of mountain bike activity, but it wasn't a hindrance. A good selection of late season wildflowers, worth the trip

nice but a bit underwhelming. looks like a nice bike ride or trail run but not very great hike.

Trails are dry. Meadow trail has many thistles!

mountain biking
muddy
rocky
4 months ago

hiking
4 months ago

Rain on Memorial Day??? Trail is great shape. 10 miles great for our group of 11 people. Too much for the 10 year old.

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