Are you military or retiree? On your android phone you can download for free "CRV Military" app. Lists all the military Fam Camp and recreation areas and details for their sites, including length. Works with your phone's GPS to navigate you right to the entrance. The only negative experience I have had was that one Air Force base had the camp next to the flight line - we didn't stay there long.
New 1998 Bounder owner. Colorado Springs, CO.