
From the Organizer
The Autumn Lake Triathlon begins with a 0.4 mile swim in a clean, spring-fed lake in the heart of Williamstown, NJ. The 13 mile bike ride is flat and fast and includes roads with large bike lanes. The 5K run will take place on the property of Autumn Lake Winery and will take you through trails (hard packed dirt, some grass, sand, and loose dirt) around two lakes and through the vineyard.
Distances & Pricing
Race Location
About This Sport
Endurance Grid is here to help you understand the sport, decide if it's the right fit, and learn how to prepare. For course distances, logistics, and race-day specifics, always defer to the race organizer's event page.
Three sports, one race — swim, bike, run in sequence, with transitions that are a discipline of their own.
Open water, open roads, and competition with yourself. Cross the finish line knowing what it took to get there.
Swim, bike, run — back to back. The sprint distance makes it far more accessible than most people think.
Coming Up
30th Anniversary Jersey Genesis Triathlon, Duathlon, & Aquabike #
Stampone O'Brien Dilsheimer Holloway Escape the Cape Triathlon
Stone Harbor Triathlon.
Brookville Olympic Triathlon, Duathlon, & Aquabike; Sprint Triathlon & Aquabike #
Frequently Asked Questions (FAQs)
Autumn Lake Triathlon
Aug 2, 2026