Great ride and well worth the trip from where ever you're coming from!
   I love snapping shots with my digital camera so your going to have to put up with all my photos as you read along.

Here We Go...
There is 35 miles of trail and nearly 5,000 acres of rolling hills, intermittent streams, meadows and woodland that are virtually unmarred by modern intrusions.   You'll be sharing the trails with hikers, horsemen, photographers, anglers, and joggers so be careful as they could be around any corner. Elevations in the park vary from 360 to around 1,880 feet, typical California coastal terrain, redwood groves, oak woodlands, brush/grass hills and lots of rocks.   There are restrooms and picnic tables scattered around the whole park

Climate...
Temperatures are moderate.   Daytime high temperatures during the summer are in the 80s and 90s, wintertime highs are in the 50s, at least that's what they say, LOL, the times I have been there it seemed pretty darn hot!   Rainfall averages about 30 inches a year, most of it during the winter and early spring and there is little fog at times.

What I Think?
I rode here a couple of years ago and wasn't real impressed but now that they have made single track out of some of the double track I LOVE IT!
   I really dig tight, technical single track and there is just enough of it here to keep me interested as well as plenty of trails to just cruise and enjoy the sites on.   It is my opinion that Annadel has plenty to offer all abilities.   The only thing that you will not be able to avoid is some climbing, but after all... this is mountain biking.