Wanderers Union is returning after a several year hiatus. If you haven't done this yet, it's highly recommended. They do 4 events in a year, and each one gets more intense as it goes along. The challenge is to visit 4 (out of 5) different zones within 4 hours using only public transportation or walking. The next one is visiting 8 (out of 10) in 8 hours, followed by 12 (out of 15) in 12 hours and finally 24 (out of 30) in 24 hours. If you're interested in the first one feel free to sign up via Facebook, I'm planning to treat it as a mini Explorers outing (with Line in the Sand, Stellar Cartography, merit badge earning and a flux photo).