Sprint triathlons can vary in distance, but generally they include a 0.5-mile (750 m) swim, 12.4-mile (20K) bike and 3.1-mile (5K) run. In addition to simply being a great gateway into the sport of triathlon, sprint distances have a lot to offer newcomers and novices alike. 9 Reasons Sprint Triathlons Are the Best Distance #IRONMAN