"I mean, I'm not a fan of swimming, biking or running, which is perfect for triathlon," Jeff told CBS News, laughing.Jeff and his wife, Becky, found out their son had cerebral palsy when he was just three weeks old and were devastated by his diagnosis."I remember asking him one day, I said, 'You know, what if he can't play catch with you?"Even though he got him the 140 miles, he'll always be hiding behind Johnny," Becky said of her husband.They're doubling down in hopes of securing a spot at the Ironman World Championship next year in Kailua-Kona, Hawaii."