ran from Marathon on one coast, over the hills
to Athens and brought word of a great victory for the Greeks lead by Callimachus over the Persians lead by Darius.
They call the race the 'Marathon' not the 'Athens'. The crucial point is that Marathon is on the opposite coast from Athens and was the site of a famous Greek victory against the Persians (Modern Turkey / Iran).
No wonder they refer to these legends as Greek tragedies; in this instance sadly, the Spartans hit a religious time-out and would not help the Athenians, and Phedippedes himself, hit a terminal 'Blue Screen' when he returned to Athens to tell of the tell Sparta of the impending Persian 490 BC.
The Most Famous Long Distance Race — The Marathon