Looking for a great trail in Annadel State Park, California? AllTrails has 21 great hiking trails, trail 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 18 moderate trails in Annadel State Park ranging from 3.4 to 12.7 miles and from 288 to 1,558 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

trail running

wild flowers

forest

mountain biking

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.

Trail is well maintained. More shade than sun. Went at 11am, not many people. Saw about 20 mountain bikers in total and just a few hikers. Certainly areas of fire damage but also signs of regrowth and recovery. Was lovely and tranquil. Took about 2.5 hrs at a relatively relaxed pace.

Wide rocky road. Easy grade. Beautiful amble thru oaks and fields. Wild turkeys. No dogs allowed. Lots of bicycles. Signs of horses.

hiking
muddy
rocky
11 days ago

hiking
muddy
rocky
13 days ago

rains have made it more difficult because of the ruts. it can be unstable walking in several places.

Canyon to Marsh and up to Henry’s Knob, gorgeous views. Down the back side, Ridge Trail to Buick Meadow then Burma to Lake Ilsanjo and down Spring Creek

We did this route of 14.3 miles in 6 hours. Got to go to the top of Bennett mountain via a trail w/ a gate that said ( posted no trespassing ) ( keep gate closed) but the gate wasn’t locked , plus ALL TRAILS took me right through there ! I didn’t go 1/4 mile past anyways to get to the the top of Bennett mountain then turned around

hiking
26 days ago

Reverso. Nice

hiking
muddy
26 days ago

Great scenic loop with varied terrain. We started from Spring Lake entrance (utilizing our Sonoma Regional Parks pass for free parking), cutting uphill to Cobblestone and then followed the route as shown.

Easy trail, great for biking or trail running. Some fun sights to keep it interesting, and the lake is decent as a destination. Tons of fun to continue exploring through the rest of the park though!

Awesome loop.

mountain biking
muddy
2 months ago

Great in light rain, nobody around, nice breezy day and quiet all fay!

NO DOGS. Had to turn back less than a mile in because there are no dogs allowed, however, this is not signed until .7 miles.

hiking
2 months ago

this was a fun running trail with some technical climbs. Dont run it without a map of the trail though, it is poorly marked. Also the tracking on the app got messed up somehow, this is only a five and a half or so mile long trail, not 32.

hiking
3 months ago

Easy to moderate hike. Lots of mountain bikers on trail. $7 to park.

I would rate this route as a moderate one. I hiked this trail with two other ladies. We started at Parktrail trailhead and went onto Canyon Trail, around Lake Ijsanjo and down Spring Creek Trail.The weather was perfect for today's hike - cool with a little fog. We were fortunate to see many does and bucks out early. Clearly mating season has begun. It took us a little less than two hours to do the hike - about 2 to 3 miles an hour. Great workout.

5 months ago

Beautiful vistas, even in foggy weather. Watch out for mountain bikes if you are hiking!

mountain biking
6 months ago

Definitely not kid friendly. My 8 year old had to push his bike for half of the trail due to so many rocks. It should only be attempted by an Intermediate adult.

This is a nice starter trail if you are just beginning hiking, it has nice distance but only slight elevation changes.
Nice mix of sun and shade with no views.
Looks like mainly used for a bike trail.
Once you feel comfortable with this trail then move up to Hood mountain, Armstrong or Sonoma Mountain. ECT

No Dogs... The starting doesn’t say that nor does the listing... but the trail goes into Anadale which does not allow dogs.

The real issue is the people on the trail, usually the older retired type with nothing better to do then stop and harass you even when you’re trying to leave.

A very nice walk in the park. elevation gain is minimal.

Nice hike with lots of beautiful scenery and a good amount of wild life  its a good hike if you want to get a good hike in for the whole day and feel it the next day. I enjoy going once a week!

Beautiful. Moderate climb, the marsh at the end is gorgeous. Combination of burnt, new, and existing plant life. Rocky paths, not many people out there, occasional mountain bikers.

good first 3.5 miles with a walk on asphalt for the last mile.

A pleasant, moderate hike to Lake Ilsanjo and back. Went on a very sunny Saturday afternoon in early July. Nice heat under the sun but not sweltering.

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