The Arizona Monster 300 may be full, but the waitlist is WIDE open! If you’re up for the challenge of 309 miles through the wild Sonoran desert, add your name to the list. With 41,000’ of elevation gain, endless single-track, and 7 days to get it done, it’s a journey worth waiting for. #destinationtrailraces #AZmonster300 #300isthenew200