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With a Start and Finish line positioned alongside the century-old structures of the Village of Marshallton, you might say that the Marshalton Triathlon is 50 years young. But in the world of competitive races, the Marshalton Triathlon has earned the distinction of being one of the longest-running triathlons in the country. Deeply rooted in the history and spirit of community synonymous with the Village of Marshallton, the Marshalton Triathlon has become its own long-standing tradition for the thousands of participants and spectators that mark the first Sunday of October on their calendars as Triathlon Sunday. 


Stroll back in time to experience the 2nd annual Marshalton Triathlon on October 1975.

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