Athens Olympic Sports Center

The Athens Olympic Park (formerly known as Olympic Athletic Center of Athens "Spiros Louis" (Greek: Ολυμπιακό Αθλητικό Κέντρο Αθηνών "Σπύρος Λούης", Olympiakó Athlitikó Kéntro Athinón "Spýros Loúis") or OACA (OAKA)), is a sport facilities complex located at Marousi, northeast Athens, Greece. The complex consists of five major venues as well as other supplementary sport facilities.

The Athens Olympic Aquatic Centre is a complex at the Athens Olympic Sports Complex, consisting of two outdoor pools and one indoor pool, that was built for the 1991 Mediterranean Games. It was refurbished and expanded for the 2004 Summer Olympics. The larger of the outdoor pools, which seats 11,500 spectators, hosted swimming and water polo events.

The Athens Olympic Velodrome is a velodrome stadium that is located in Marousi, Athens, Greece, at the Athens Olympic Sports Complex. The stadium, which seats 5,250 - though only 3,300 seats were made publicly available for the 2004 Summer Olympic Games - has distinctive twin roofs, covering the stands on each side.

The Athens Olympic Tennis Centre is a grouping of 16 tennis courts at the Athens Olympic Sports Complex, in Marousi, Athens, Greece. The centre consists of a main stadium, known as The Main Court, seating 8,600 fans - though only 6,000 seats were made publicly available during the 2004 Summer Olympics - two semifinal courts, seating 4,300 spectators - though only 3,200 seats were made publicly available during the Olympics - and thirteen side courts, seating 200 observers each.

The Athens Olympic Tennis Centre Main Court, commonly known simply as, "The Main Court", is the main stadium of the Athens Olympic Tennis Centre, which is a group of 16 tennis courts, located at the Athens Olympic Sports Complex. The Main Court seats 8,600 people for tennis matches.

Eirini station (Greek: Σταθμός Ειρήνης Stathmos Eirinis) is a station on Line 1 (Athens Metro) of the Athens Metro. It is adjacent to the Athens Olympic Sports Complex in Marousi, a northern suburb of Athens, Greece, 20.850 kilometres (12.956 mi) from the starting point of the line at Piraeus. It opened on September 3, 1982, and was renovated in 2004.

The O.A.C.A. Olympic Indoor Hall (honorarily named Nikos Galis Olympic Indoor Hall since 2016), which is a part of the Olympic Athletic Center of Athens (O.A.C.A.) "Spiros Louis" (Greek: O.A.K.A.), was completed in 1995, and was the largest indoor venue in use for sporting events at the 2004 Summer Olympics in Athens, Greece.

The women's discus throw competition at the 2004 Summer Olympics in Athens was held at the Olympic Stadium on 20–21 August. It was originally planned to hold the discus throw at the Ancient Olympia Stadium, but it was discovered that the field was not large enough to accommodate the range of modern discus throwers, and would have posed a danger to spectators.

The Olympic Stadium of Athens "Spyros Louis" (Greek: Ολυμπιακό Στάδιο Αθηνών "Σπύρος Λούης", Olympiakó Stádio Athinon "Spyros Louis") is a sports stadium in Athens, Greece. It is a part of the Athens Olympic Sports Complex and is named after the first modern Olympic marathon gold medalist in 1896, Spyros Louis.

The men's individual pursuit event in cycling at the 2004 Summer Olympics consisted of matches between two cyclists. The riders would start at opposite ends of the track. Each had 16 laps (4 kilometres) in which to catch the other cyclist. If neither was caught before one had gone 16 laps, the times for the distance were used to determine the victor.