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
Sprint Triathlon (5k Run) Duathlon (1.6k Run + 5k R... Relay Duathlon Team Triathlon Relay Team

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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.

7 km
Duathlon (1.6k Run + 5k Run)
5 km
Sprint Triathlon (5k Run)
Relay Duathlon Team
Triathlon Relay Team

Events nearby

A USAT-certified triathlon in Paris, Illinois on June 13, 2026 offering sprint and Olympic distances plus relay options, with chip timing, race shirts, swim caps, awards and post-race refreshments.
Experience Indianas only gravel triathlon at Griffin Bike Park featuring beginner friendly terrain for swimming, gravel cycling, and trail running. Choose between solo or relay formats for the triathlon, duathlon, or kayak triathlon.