For a quarter century, this Marlborough, CT staple has launched countless athletes into Iron Distance racing and remains a trusted stepping stone for triathletes looking to level up. Choose between the Sprint (600-yard swim, rolling 2-loop bike, scenic 5K lakeside run with aid at town hall) or the Super Sprint (200-yard swim, one-loop 5.5-mile bike, 1.7-mile run) to match your goals, with both offering individual, relay, and aqua/bike options. First-come, first-served racks and gender-based waves make this a welcoming, well-organized event perfect for testing your triathlon skills.