At his heaviest in late 2010, Ryan "Mac" McDonald weighed 530 pounds.
Taking the 'Big' out of Mac —
At his heaviest in late 2010, Ryan "Mac" McDonald weighed 530 pounds.
Courtesy Tim Scrivner
McDonald lost 300 pounds in less than three years by exercising and giving up fast food and soft drinks.
Taking the 'Big' out of Mac —
McDonald lost 300 pounds in less than three years by exercising and giving up fast food and soft drinks.
courtesy Jessica McDonald
McDonald weighed 350-plus pounds when he competed in his first Jailbreak race during the fall of 2011.
Taking the 'Big' out of Mac —
McDonald weighed 350-plus pounds when he competed in his first Jailbreak race during the fall of 2011.
courtesy Anneke Miller
McDonald, left, has since competed in a variety of events, including 5K and 10K runs, a half-marathon, a duathlon and a sprint triathlon.
Taking the 'Big' out of Mac —
McDonald, left, has since competed in a variety of events, including 5K and 10K runs, a half-marathon, a duathlon and a sprint triathlon.
Courtesy Jessica McDonald
In August, McDonald will compete in the Hotter 'N Hell Hundred-mile bicycle race, and he hopes to enter a standard triathlon.
Taking the 'Big' out of Mac —
In August, McDonald will compete in the Hotter 'N Hell Hundred-mile bicycle race, and he hopes to enter a standard triathlon.
Courtesy Anneke Miller
McDonald will fulfill a lifelong dream this November by racing a motorcycle in the Baja 1000.
Taking the 'Big' out of Mac —
McDonald will fulfill a lifelong dream this November by racing a motorcycle in the Baja 1000.
Courtesy Clint McDonald
Mac and Jessica, a school principal finishing her doctorate, have been married for going on 15 years. Mac is a stay-at-home dad raising their children, Libby, 5, and Matthew, 3.
Taking the 'Big' out of Mac —
Mac and Jessica, a school principal finishing her doctorate, have been married for going on 15 years. Mac is a stay-at-home dad raising their children, Libby, 5, and Matthew, 3.
Courtesy Rachel McDonald Romo