Thunder in the Valley

MAY
9
2026
Kick off the multisport season at the 41-year-old Thunder in the Valley in Indiana's Hawthorn Park. Choose from a sprint triathlon, duathlon, or a team relay, each featuring a scenic course with a lake swim. It's a USAT-certified event with finisher medals and refreshments.
Sat 9 May 2026
500 Meter Swim 1.6 Kilometer Run 5 Kilometer Run 20 Kilometer Bike

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Thunder in the Valley

The Thunder in the Valley event is a multisport competition held in May at Hawthorn Park in Terre Haute, Indiana. It is a USA Triathlon (USAT) certified event, and a USAT membership or one-day race license is required for registration.

The event offers four different competition formats, each with a team relay option:

  • Sprint Triathlon: A 500 m swim, a 20 km bike, and a 5 km run.
  • Duathlon: A 1.6 km run, a 20 km bike, and a 5 km run.
  • Triathlon Relay Team: Teams of 2 or 3 members.
  • Relay Duathlon Team: Teams of 2 members.

Participants receive a finisher medal, swim cap, and event t-shirt. The course is described as starting with a swim in calm Hawthorn Lake, followed by a rolling hill bike course and a flat, shaded out-and-back run. An optional practice swim is held the evening before the race. Awards and post-race refreshments are provided. Visit the organization's website for the most recent information.

5 km
5 Kilometer Run
1.6 Kilometer Run
500 Meter Swim
20 Kilometer Bike