By Caitlin White With the Winter Olympics here, it’s time to revisit a recurring question: Where’s the nearest place to hop on a luge track? OK, so for that, you’ll actually need to head up to Lake Placid (there are surprisingly few luge tracks in the U.S.), but DC residents don’t have to journey particularly far to get into the thick of it with some other winter games. For instance: Did you know that DC has one of the most Olympic-centric speed skating facilities in the country? Or that multiple curling facilities are just within reach? Or that no less a brand than Vail Resorts operates a sup…