Triathlon Terheijden

The Inofec Triathlon Terheijden is one of the oldest triathlons in the Netherlands, taking place annually on the second Sunday in June. The event features a swim start in the Mark River, with a running course of 2.5 km per lap. All segments, including swimming, cycling transitions, and the finish line, are conveniently located within a 500-meter radius.

The triathlon welcomes participants of all levels, including casual runners, recreational athletes, and competitors, in individual, duo, or trio formats. In 2025, the event will offer 1/4 and 1/8 triathlon distances, but will not include a half triathlon due to roadworks. Visit the organization's website for the most recent information.