As has been stated above, the Lake Bryan trails are unexpected in this part of the state. The levy that surrounds the lake makes for some short if not steep climbing. The trails are mostly solid intermediate singletrack with enough obsticals to be entertaining, but the Brazos Valley MTB Club has done a good jop of taming the impossible bits. They continue evolving the trail system to limit errosion and add mileage. The ride is moderatly fast once you get familiar with the route and its even smooth enough to be enjoyable on a hardtail.
Difficulty comes from the rutted descents and almost impossibly loose climbs.
Not a good place to ride when wet because of the vast amounts of sticky clay. Besides, riding it while wet tears up the hills. The west loop dam has a good place to watch the sun set. It's as close to a vista as we have around here. A beginner loop has been added in the central part of the park as the East and West loops would be discouraging to a novice rider.