Huntsville State Park
It's all or nothing in the trails in this park. In spite of the area, they take no prisoners... This is a hard, fun place to ride. There are some hills with four significant climbs and some downhills. There is a tough bridge to cross and a sandy pit that you have to go thru. Because it's sandy, you'll want to ride after a rain packs the ground. About 7.5 miles of trails. It's fun, so you'll want to do more than one lap. Tech Tip: Lower tire pressure helps with traction in the sand.
From Beaumont, Take HWY105 to IH45 north and follow the signs