If you came when a huge group of people came like a few weekends back...yes. But if it'd just be a few people intimate off road experience, probably not. San Angelo is cool and all but it's not worth a 4 hour trip for semi decent trails with only a hand full that'd be challenging. Though, tbh, when i go at night I'm not going to try any of the real technical stuff cause it's too hard without spotters. I'd suggest Hidden Falls Adventure Park at night. That would be about a 3+ hour trip for you (if not 4 hours, idk) and theres so much to do out there its not even funny.