Battle of Marathon of events, with the competitors running from Marathon to Athens. So popular was this event that it quickly caught on, becoming a fixture at the Olympic games, with major cities staging their own annual events. The distance eventually became fixed at 26 miles 385 yards, or 42.195 km, though for the first years it was variable, being around —the approximate distance from Marathon to Athens. Battle of Marathon The Battle of Marathon (Greek: , "Machē tou Marathōnos") took place in 490 BC, during the first Persian invasion of Greece. It was fought between the citizens of Athens, aided by Plataea,
Ancient Greek units of measurement Ancient Greek units of measurement Ancient Greek units of measurement varied according to location and epoch. Systems of ancient weights and measures evolved as needs changed; Solon and other lawgivers also reformed them "en bloc". Some units of measurement were found to be convenient for trade within the Mediterranean region and these units became increasingly common to different city states. The calibration and use of measuring devices became more sophisticated. By about 500 BC, Athens had a central depository of official weights and measures, the "Tholos", where merchants were required to test their measuring devices against official standards. Some Greek