Holiday Spring Campground is located in Custer Gallatin National Forest. There are 3 campsites with handicap accessible toilets. Water is not provided, so remember to bring your own. This is a pack it in, pack it out campsite. Largest Parking Spur 30'. No Reservations: This campground does not use a reservation system, it is managed on a first-come, first-served basis. Be aware the campground may fill up on weekends & holidays during the summer months and you should arrive in the early afternoon to ensure there is a space available for the night. Please limit your stay to 10 days. No fee is required. Enjoy eastern Montana!