Both units offer a multitude of recreational opportunities such as camping, picnicking, boating, fishing; hiking and biking, volleyball, horseshoes, basketball, backpacking, and equestrian use (visitors must bring their own horses). More than 20 miles of trail are open to hikers, mountain bikers, and equestrians affording visitors the opportunity to exercise and enjoy the beauty of the parks. Water lovers can enjoy boating, fishing, swimming, and skiing on Lake Somerville.
It's been a while since I rode this trail (2 years), so some of the trail features might be different. The trail is 13 miles between each unit (Birch Creek and Nails Creek). No doubt it's long and I rode on a 100 degree day. Plan for lots of water. I ran out, however I got a couple of bottles at the parks office vending machine for the ride back. Most of the trail is double track and most of it's flat. No challenges with rocks. However, dry sand was a problem. I would recommend this track for a long haul ride.