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 peri ...

athlete from Elis who won the double race ( Diaulos) of the 14th

Ancient Olympic Games The ancient Olympic Games (Ὀλυμπιακοὶ ἀγῶνες; la, Olympia, neuter plural: "the Olympics") were a series of athletic competitions among representatives of city-states and were one of the Panhellenic Games of Ancient Greece. ...

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