Wisconsin Triathlon Calendar 2025-2026

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Explore the best triathlons in Wisconsin for 2025-2026! Our updated list features 26 exciting races across the region. Find your next race in Wisconsin below and join the running community at these great events!

August 2025
The Wisconsin Women's Triathlon, formerly known as Iron Girl, is an empowering event aimed at uniting women of all ages in a supportive and energetic environment. Scheduled for August 10, 2025, at Pra..
The Waupaca Area Triathlon is an exciting multi-sport event taking place at Shadow Lake in downtown Waupaca. Scheduled for August 15-16, 2025, participants can choose from various challenges, includin..
The Try Cambridge Tri is a sprint distance triathlon taking place in Cambridge, Wisconsin. Participants can compete as individuals or in relay teams, with the event featuring a 1/4 mile swim, a 13-mil..
The Sugar River Triathlon, part of the Wisconsin Triathlon Series, is an exciting sprint triathlon held in Belleville, WI. Participants can expect a safe and enjoyable race experience, featuring a 1/4..
September 2025
IRONMAN 70.3 Wisconsin is a premier triathlon event held in Madison, Wisconsin, featuring a scenic swim in Lake Monona, a challenging bike course through rolling hills, and a picturesque run along the..
The Devil's Challenge Triathlon is a scenic sprint triathlon held in Baraboo, Wisconsin, as part of the Wisconsin Triathlon Series. This event features a 1/4-mile swim in Devil's Lake, followed by a c..