Hypenus of Elis was an

ancient Greek Ancient Greek includes the forms of the Greek language used in ancient Greece and the ancient world from around 1500 BC to 300 BC. It is often roughly divided into the following periods: Mycenaean Greek (), Dark Ages (), the Archaic p ...

athlete from

Elis Elis or Ilia ( el, Ηλεία, ''Ileia'') is a historic region in the western part of the Peloponnese peninsula of Greece. It is administered as a regional unit of the modern region of Western Greece. Its capital is Pyrgos. Until 2011 it was ...

who won the double race ( Diaulos) of the 14th Ancient Olympic Games in 724 BC.Eusebius.
Chronicon
' (English translation from Latin, original Greek lost) at Attalus.org It was the first time that the double race, i.e. a race with a distance of 2 stadia = 2 x 192 m, was run at the Olympic Games.

References

{{AncientGreece-bio-stub 8th-century BC Greek people Ancient Olympic competitors Ancient Eleans