The Municipality of Nafplio and DOPPAT, in collaboration with the whynot company, are organizing the sports event Nafplio Challenge on September 30 - October 1. The sports event includes two sub-sports events.

On Saturday 30 September swimming and running races in the Tolo area called Tolo Swim-Run and on Sunday 1 October triathlon and aquathlon races called Nafplio Triathlon.