Olorus (Greek: Ὄλορος) was the name of a king of Thrace.
 His daughter Hegesipyle married the Athenian statesman and general Miltiades, who defeated the Persians at the Battle of Marathon in 490 BC.
 Olorus was also the name of the father of the 5th century BC Athenian historian Thucydides, the author of the "History of the Peloponnesian War".
Aristodemus (Greek: Ἀριστόδημος ; c. 550 – c. 490 BC), nicknamed "Malakos" (meaning "soft" or "malleable" or possibly "effeminate"), was a strategos and then tyrant of Cumae.
 As a strategos, he twice defeated Etruscan armies.
 He gained popularity amongst the people of Cumae due to his opposition to the city's aristocracy and his proposals to more fairly share land and to forgive debts.
 He was then successful in overthrowing the aristocratic faction, yet became a tyrant himself.
 He was assassinated by the aristocratic faction around 490 BC.
At the 2004 Summer Olympics, the athletics events were held at the Athens Olympic Stadium from August 18 to August 29, except for the marathons (run from Marathonas to the Kallimarmaro Stadium), the race walks (on the streets of Athens), and the shot put (held at the Ancient Olympia Stadium).
 A total of 46 events were contested, of which 24 by male and 22 by female athletes.
The Battle of Thermopylae ( ; Greek: Μάχη τῶν Θερμοπυλῶν , "Machē tōn Thermopylōn") was fought between an alliance of Greek city-states, led by King Leonidas of Sparta, and the Persian Empire of Xerxes I over the course of three days, during the second Persian invasion of Greece.
 It took place simultaneously with the naval battle at Artemisium, in August or September 480 BC, at the narrow coastal pass of Thermopylae ("The Hot Gates").
 The Persian invasion was a delayed response to the defeat of the first Persian invasion of Greece, which had been ended by the Athenian victory at the Battle of Marathon in 490 BC.
 Xerxes had amassed a huge army and navy, and set out to conquer all of Greece.
 The Athenian politician and general Themistocles had proposed that the allied Greeks block the advance of the Persian army at the pass of Thermopylae, and simultaneously block the Persian navy at the Straits of Artemisium.
Duke Jing of Qi (; died 490 BC) was ruler of the State of Qi from 547 to 490 BC.
 Qi was a major power during the Spring and Autumn period of ancient China.
 His personal name was Lü Chujiu (呂杵臼), ancestral name Jiang (姜), and Duke Jing was his posthumous title.
 After the years of unrest as two powerful ministers, Cui Zhu and Qing Feng, sought to control the state of Qi, Duke Jing appointed Yan Ying as his prime minister, and Qi entered a period of relative peace and prosperity.
The second Persian invasion of Greece (480–479 BC) occurred during the Greco-Persian Wars, as King Xerxes I of Persia sought to conquer all of Greece.
 The invasion was a direct, if delayed, response to the defeat of the first Persian invasion of Greece (492–490 BC) at the Battle of Marathon, which ended Darius I's attempts to subjugate Greece.
 After Darius's death, his son Xerxes spent several years planning for the second invasion, mustering an enormous army and navy.
 The Athenians and Spartans led the Greek resistance.
 About a tenth of the Greek city-states joined the 'Allied' effort; most remained neutral or submitted to Xerxes.
Year 490 BC was a year of the pre-Julian Roman calendar.
 At the time, it was known as the Year of the Consulship of Camerinus and Flavus (or, less frequently, year 264 "Ab urbe condita").
 The denomination 490 BC for this year has been used since the early medieval period, when the Anno Domini calendar era became the prevalent method in Europe for naming years.
Themistocles ( ; Greek: Θεμιστοκλῆς "Themistoklẽs"; "Glory of the Law"; c. 524–459 BC) was an Athenian politician and general.
 He was one of a new breed of non-aristocratic politicians who rose to prominence in the early years of the Athenian democracy.
 As a politician, Themistocles was a populist, having the support of lower-class Athenians, and generally being at odds with the Athenian nobility.
 Elected archon in 493 BC, he convinced the polis to increase the naval power of Athens, a recurring theme in his political career.
 During the first Persian invasion of Greece he fought at the Battle of Marathon (490 BC) and was possibly one of the ten Athenian "strategoi" (generals) in that battle.
Marathon (Demotic Greek: Μαραθώνας, "Marathónas"; Attic/Katharevousa: Μαραθών , "Marathṓn") is a town in Greece, the site of the battle of Marathon in 490 BC, in which the heavily outnumbered Athenian army defeated the Persians.
 The tumulus or burial mound (Greek" Τύμβος, tymbos", tomb) of the 192 Athenian dead, also called the "Soros", which was erected near the battlefield, remains a feature of the coastal plain.
 The Tymbos is now marked by a marble memorial stele and surrounded by a small park.
The first Persian invasion of Greece, during the Persian Wars, began in 492 BC, and ended with the decisive Athenian victory at the Battle of Marathon in 490 BC.
 The invasion, consisting of two distinct campaigns, was ordered by the Persian king Darius I primarily in order to punish the city-states of Athens and Eretria.
 These cities had supported the cities of Ionia during their revolt against Persian rule, thus incurring the wrath of Darius.
 Darius also saw the opportunity to extend his empire into Europe, and to secure its western frontier.

Question: During what athletics events in August 2004 were marathons ran from the site of the battle of Marathon in 490 BC to the Kallimarmaro Stadium?
Answer: 2004 Summer Olympics