He won the silver medal in the 1896 Summer Olympics in Athens.

[1] 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.

The winner, Austrian Paul Neumann, had finished in 8:12.6.

This biographical article related to a Greek swimmer is a stub.