Wisconsin
Wisconsin Triathlon Calendar 2026-2027
Monthly updates for Wisconsin
Get new running races (and updates) in your inbox every month.
Explore the best triathlons in Wisconsin for 2026-2027! Our updated list features 22 exciting races across the region. Find your next race in Wisconsin below and join the running community at these great events!
September 2026
IRONMAN Wisconsin in Madison is an IRONMAN triathlon with a lake swim, rolling bike, hilly run and a Capitol finish, noted for strong spectator support.
Sprint triathlon in Kewaskum featuring a 5K run, 2 mile kayak, and 13 mile bike ride, with relay teams and a 1 mile youth run option.
Rise & Run in Denmark, WI combines a run-bike-run duathlon with individual and two or three person relays plus a free one mile fun run where leashed dogs and strollers are allowed; proceeds support Arise missions.
A triathlon at Devil's Lake in Baraboo, Wisconsin on September 20, 2026, offering sprint individual, sprint relay, and a Wisconsin Triathlon Series entry. Distances include a 400 m swim, a 15 mile bike, and a 5K run.
A multi-format community event at Kiel High School featuring full and short sprint triathlons, aquabike options, team relays, a Kid's Triathlon, and a 100 yard Raider Dash, with concessions on site and proceeds to the Kiel High School Booster Club.
Monthly updates for Wisconsin
Get new running races (and updates) in your inbox every month.
Multi format triathlon and duathlon day at UW Whitewater on September 27, 2026 featuring Olympic, Sprint, Super Sprint, aquabike, duathlon and relay options.
November 2026
An adventure race around Lapham Peak State Park with three timed options, 3, 8, and 18 hours, featuring paddling, trekking, biking and checkpoint navigation.
An indoor triathlon at the RecPlex combining a timed swim, spin bike, and treadmill run with equal-weight scoring, medals for finishers, and a $40 online registration fee; wave assignments and swim-lane details are provided before race day.
December 2026
A winter map-and-compass adventure race in Merrill, WI on December 5, 2026 with 3-hour and 6-hour formats for solo racers and teams.
May 2027
Adventure race near Rib Mountain, WI on May 29, 2027 with running, biking, paddling and orienteering across 3 hour, 8 hour and 18 hour options.
June 2027
Triathlon at Sandy Beach Park in Lake Mills on June 6, 2027, featuring sprint individual and relay races plus a Wisconsin Triathlon Series entry.
Timed 24- and 36-hour solo or team triathlon relays on Washington Island featuring a 0.25 mi swim, 9.91 mi bike loop and 2.0 mi run around Gislason Beach.
A triathlon in Verona, Wisconsin on June 26 2027 offering sprint and Olympic distances with individual, relay, and series entry options.
A multi-format triathlon and duathlon at Pleasant Prairie RecPlex and Prairie Springs Park on 27 June 2027 featuring sprint and Olympic distances, relays, a para sprint, collegiate races, and a charity team option.
July 2027
Pardeeville Triathlon on 07/10/2027 at Chandler Park features a 400 m swim, 15 mile bike and 5 km run with individual, relay and series entry options.
Triathlon races at Deacon Mills Park in Green Lake, WI on July 18, 2027, offering sprint and Olympic individual races, relays, and a series option.
A triathlon at Ottawa Lake State Park on July 25, 2027, featuring sprint and Olympic individual and relay races plus a series entry.
A triathlon in Merrill combining a 2-mile paddle, a 17.5-mile bike on the River Bend Trail, and a 5K trail run with multiple divisions and local transitions.
Lake Country Triathlon in Oconomowoc WI on July 31, 2027 offers Sprint, Olympic and Half Iron individual and relay races with a lake swim, scenic bike, and town run.
August 2027
Experience a scenic triathlon in Waupaca featuring a lake swim, a rolling countryside bike ride, and a fast, flat run through city streets with options for all ages and skill levels.