from The American Heritage® Dictionary of the English Language, 4th Edition
- n. Sports A cross-country footrace of 26 miles, 385 yards (42.195 kilometers).
- n. Sports A long-distance race other than a footrace: a swimming marathon.
- n. A contest of endurance: a dance marathon.
- n. An event or activity that requires prolonged effort or endurance.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A 42.195 kilometre (26 mile 385 yard) road race.
- n. Any extended or sustained activity.
from the GNU version of the Collaborative International Dictionary of English
- n. A footrace of 26 miles 385 yards.
- n. Any long and arduous undertaking, straining the endurance of the participants.
- n. a battle in 490 BC in which the Athenians and their allies defeated the Persians.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. a battle in 490 BC in which the Athenians and their allies defeated the Persians
- n. a footrace of 26 miles 385 yards
- n. any long and arduous undertaking
After Marathon (so called because a messenger ran from there to Athens to announce a victory over the Persians in 490 B.C.)(American Heritage® Dictionary of the English Language, Fourth Edition)
Ancient Greek Μαραθών (Marathōn), a town northeast of Athens. Phidippides the Greek ran the distance from Marathon to Athens to deliver a message regarding the Battle of Marathon. The modern sport of marathon running is based on a run approximately the same distance. (Wiktionary)