Autumn Lake Triathlon
Autumn Lake Triathlon is a triathlon, duathlon, running, and swimrun race on August 2, 2026 in Williamstown, NJ, with entry fees from $35 to $125.
- Date
- August 2, 2026 (10 days to go)
- Price
- $35–$125
- Sports
- TriathlonDuathlonRunningSwimRun
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.
Events
Weather
Typical Conditions
It's too far out for a forecast, so here's what weather on this date is normally like in the area. A race day forecast will replace this as race week approaches.
Typical High
86°
Typical Low
67°
Based on US Climate Normals data from Glassboro 2 Ne, 9 mi from the venue.
Host City
About Williamstown, NJ
City Elevation
139 ft
Nearest Airport
PHL
Philadelphia International Airport · 20 mi
Time Zone
Eastern Time
From Endurance Grid
Line up lodging and travel early to lock in your race weekend.
Race Location
Your Next Start Line
What Are You
Waiting For?
Every finish line starts with a single decision. Claim your spot at Autumn Lake Triathlon, put it on the calendar, and turn “someday” into a start date.
10
Days to train
- Race
- Autumn Lake Triathlon
- Date
- August 2, 2026
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From Endurance Grid
About These Sports
This race spans more than one sport — here’s a guide to each, so you can understand what’s involved and decide if it’s the right fit. For course distances, logistics, and race-day specifics, always defer to the race organizer’s event page.
Triathlon
Swim, bike, run — back to back. The sprint distance makes it far more accessible than most people think. Three sports in one race means three movements to train and race day never gets monotonous.
Duathlon
Run, bike, run. The multi-sport format without the swim. Two disciplines, one race — a great bridge between running and triathlon.
Running
From 5K to marathon, running races are an accessible entry point into endurance sport. There's a distance for every fitness level and a community at every start line.
SwimRun
A continuous race alternating open-water swimming and running across a series of segments. Distances, format, and legs vary by event.
Coming Up
More Triathlon races near Williamstown, NJ
DQ Laurel Lake Triathlon, Duathlon, Aquabike, Aquathlon, & Super Sprint Triathlon in honor of William Laubengeyer *#
Sprint · From $100 · 201 SW Lakeshore Dr.
21 miles away
Greenfields Tri/Aqua/Du/ 5K & Splash and Dash #
5K · Sprint · From $30 · Greenfields Swim Club 989 Jessup Rd. West Deptford, NJ US 08096
8 miles away
Delco Kids Triathlon
Sprint · From $45 · 501 S Providence Rd
27 miles away
DQ 15th Annual Medford Lakes Colony Sprint Triathlon, Duathlon, & Aquabike *#
Sprint · Olympic · From $95 · 90 Tabernacle Rd
18 miles away
Plan your trip
Make it a Racecation
Coming from out of town? There's more to Williamstown than race day. We'll help you line up nearby lodging, flights, a rental car, and things to do so you can make the most of your racecation.
Plan your trip to WilliamstownFrequently Asked Questions (FAQs)
What is the Autumn Lake Triathlon?+
When and where is the Autumn Lake Triathlon?+
How do I register for the Autumn Lake Triathlon?+
Autumn Lake Triathlon
Aug 2, 2026