Before the Olympics, Pepanos was hesitating about taking part because he was already thirty years old and past his prime. Finally, even though he was suffering from a cold on the day of the event, he competed in the 500 metres freestyle. He finished second with a time of 9:57.6. The winner, Austrian Paul Neumann, had finished in 8:12.6.
Lampros, S.P.; Polites, N.G.; De Coubertin, Pierre; Philemon, P.J. & Anninos, C. (1897). The Olympic Games: BC 776 – AD 1896. Athens: Charles Beck. (Digitally available at [1])