It's a race to office--literally! Ron Paul challenged his Republican Rivals to a 25-mi. Bike Ride in the Texas heat. Just for fun, who would you put your money on?Ron Paul Challenges His Republican Rivals for a 25-Mile Bike Ride [VIDEO] - International Business Twww.ibtimes.comRepublican presidential candidate Ron Paul challenged his much younger rivals to a bike ride to prove his physical fitness after moderator Wolf Blitzer had asked him about his age and health in the CNN-Florida debate Thursday. read more..