It has three levels of difficulty from the novice to the more technical riders. Green is easy, blue is intermediate, and black is hard. Know your limits enjoy. Trail is single track, with roots, jumps, wooden bridges, and switch backs. You can take it easy or make a day of it.
From I-95 North Exit Indian Town and go East until you hit US 1. Go North on US 1 until you see the State Park on your Left. It will be about 10 miles or so outside of Jupiter.
http://www.singletracks.com/item.php?c=1&i=176