ESPN Action Sports

One of the most successful, and busiest, female off-road racers ever, Mastin has collected 10 straight AMA National Enduro titles, 5 Grand National Cross Country crowns and 2 AMA National Hare Scramble championships in the Women's class, all while working full-time for her family's portable toilet business. She's also a great friend to many of her own competitors, even helping transport their bikes to events. Mastin wins her titles by showing speed and persistence; she's one of the few females to follow the full tour in so many different series. Her experience on off-road trails and obstacles will help in XG Enduro X, but the lack of a full-time training program and focus on racing won't.