What is the name of a long distance run that is 26.2 miles long?

In 490BC, the Persian army was invading Greece. The Athenian army defeated the Persian army at the plains of Marathon, and the messenger Pheiddipides ran into Athens to announce the Athenian victory - and then died. The distance from Marathon to Athens was 26 miles, 385 yards, and the foot race called a "marathon" is run to commemorate the messenger and the battle.