Denver's favorite Summer Series is ready to roll for 2013! The AQUAMAN Open Water Swim and Aquathlon Series is the perfect opportunity for swimmers and triathletes of all ages and abilities to practice their open water swimming in a fun, competitive environment and at distances not previously offered at other venues. VOTED BEST OF COMPETITOR MAGAZINE 2 years running. It's also the perfect opportunity for triathletes to practice their open water pacing and swimming in a mass start format with the bonus of an added 5K run. After each race you'll have a chance to relax, kick back with friends, and enjoy the post race food and drinks.