Boston, get ready: weïre shaking things up. This year, weïre teaming up with 508 International in Charlton, MA for a weekend you (and your legs) will never forget. Located 50 miles from downtown Boston, 508 INTL is an elite action sports venue spread out across some of the muddiest terrain Massachusetts has to offer. Spartan isnït their first OCR rodeo, either: 508 INTL hosts its own rugged endurance events. Weïre pumped to work with them to bring you Massachusettsïs biggest, baddest course yet.