Its a pretty simple trail, theres really no elevation changes or tough obstacles besides a few log jums and some small ramps. Theres one creek crossing. There are three loops you can ride with a total of 12.4 miles. There are a lot of tight turns on the longest loop so its hard to gain some good speed.
From Columbus take I-70 West toward dayton, merge onto US-68 S via EXIT 52A toward XENIA, turn left on OH 343, turn right on OH 370 and you will see the park entrace. Once youre in the park take the first left and there is a lot parking. keep following the road and stay to the left and you will come to the trail head where there is a map of the trails.
http://www.singletracks.com/item.php?c=1&i=1945