I just towed my 28 ft travel trailer with my Class C. It's not something I do on a normal basis. Luckily the TT weighs 4400 lbs. class C max tow weight is 5000 lbs.
Texas Law
Vehicle Combinations
Texas Transportation Code 621.205.
A combination of not more than three vehicles, may be coupled together if the combination of vehicles, other than a truck-tractor combination, is not longer than 65 feet.
A passenger car or another motor vehicle that has an unloaded weight of less than 2,500 pounds may not be coupled with more than one other vehicle or towing device at one time.
A house trailer or towable recreational vehicle and motor vehicle combination may not be longer than 65 feet.