MDI Indoor Triathlon consists of a ½ mile swim, a 9 miles bike and a 3 miles run. MDI Kids Indoor Triathlon consists of a 300 yards swim, a 2.5 miles bike and a 1 mile run. All members in MDI Kids Indoor Triathlon must be under the age of 16. Entry fees are $10 for MDI Y member and $15 for non-member. Each participant will receive a t-shirt. awards are available.