Mighty Mississinewa Triathlon
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Event overview
The Mighty Mississinewa Triathlon takes place on September 12, 2026, at Miami State Recreation Area in Peru, Indiana. The event is organized by Ruble Racing and is USAT sanctioned. Entry includes park entry and on-site parking. The event is limited to 1,000 total racers. Race-day packet pickup and on-site registration are available, and a mandatory pre-race briefing is held. The event is professionally chip timed with live results and splits. All participants receive a race t-shirt and finishers receive medals. Age eligibility for most races begins at 12 years old (age on 12-31-2026).
Race formats and distances
- Sprint Triathlon - 500 yard swim; 12.5 mile bike; 3.1 mile run
- Olympic Triathlon - 1650 yard / 1500 meter swim; 24.8 mile bike; 6.2 mile run
- Half Iron Triathlon - 1.2 mile swim; 56 mile bike; 13.1 mile run
- Duathlon, Aquabike, and 2- and 3-person relay options are offered
Course, facilities and rules
The swim is in Mississinewa Reservoir with a beach time-trial (TT) start; buoys mark turns and an optional mass start is available. The bike uses quiet, paved county roads with mostly flat profiles and a few minor hills; the Half Iron bike is run as multiple laps. The run is an out-and-back on a smooth paved park path. Aid stations are located near transition and roughly every mile on the run; there are no aid stations on the bike course. Helmets meeting CPSC standards are required for the bike, and personal audio devices are prohibited. Wetsuit use follows USAT temperature rules. Transition procedures, body marking, chip pickup, and race number rules are enforced. Contingency plans include converting to duathlon or other race formats if swim or bike segments are unsafe. Visit the organization's website for the most recent information.
