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Triathlon Calendar near Belleville 2026-2027

Monthly updates for Belleville

Get new running races (and updates) in your inbox every month.

Explore the top triathlons near Belleville for 2026-2027! We've gathered 4 exciting races in the area. Check out our detailed list below to find your next local race.

June 2026
Race the Wisconsin Triterium Triathlon in Verona, featuring multi loop sprint and Olympic distances at Fireman's Park. Part of the seven race Wisconsin Triathlon Series, with relay and individual entries, pro timing, swag, and digital photos.
July 2026
Train on the official Ironman Wisconsin and 70.3 courses at the C26 Triathlon Camp in Madison, July 30 to August 2, 2026. Coaches lead open water swims, coached rides, brick sessions and team meals for all levels.
August 2026
Challenge yourself at the Sugar River Sprint Triathlon in Belleville on August 23, 2026 with a Lake Belle View swim, rolling 16 mile bike and a 5 km run on gravel trails. Finishers receive a tech tee, medal, pro timing and free photos.
September 2026
IRONMAN 70.3 Wisconsin in Madison blends a Lake Monona swim, rolling hills bike and a waterfront run that finishes beneath the Wisconsin State Capitol. Held September 12 2026, this race is a qualifier for the 2027 IRONMAN 70.3 World Championship.