“...Philippides, the Greek messenger... was taking part in the Battle of Marathon... witnessed a Persian vessel changing its course towards Athens...ran the entire distance to Athens without stopping,..burst into the assembly, exclaiming νενικήκαμεν (nenikēkamen, “we have won!”), before collapsing and dying.”
https://en.wikipedia.org/wiki/Marathon
“Philippides, the Greek messenger...”
Uh, that would be Phidippides.