I'm not quite sure why you're wondering about ranges all across the country...if we knew where you were, some folks might be able to help you.
FWIW, We have two in CO, Colorado Rifle Club in Byers, and Buffalo Creek Rifle Club nean Bailey. They don't have a 500 yard line though. They have 200, 300, 600, 800, 900, and 1000 lines. Also nearby is the NRA Whittington center, which has just about whatever you'd like.