A 600-foot footrace was the only athletic event at the first Olympics, a festival held in 776 B.C. and dedicated to Zeus, the chief Greek god.
For the next millennium, Greeks gathered every four years in Olympia to honor Zeus through sports, sacrifices and hymns. The five-day festival brought the Greek world together in devotion to one deity.
What began in ancient Greece as a festival to honor a single god, Zeus, has now become an almost Olympian task, as organizers of the games navigate dozens of sacred fasts, religious rituals and holy days.
The London Olympics will try to accommodate religious athletes with 193 chaplains, a prayer room in every venue and a multifaith center in the Olympic Village.
Athletes at the ancient Olympics believed their training honored the gods, and victory was a sign of favor from a deity. As contests like wrestling, boxing, and horse racing were added to the Olympic roster, they supplemented devotional sacrifices, hymns, and ceremonies.
“The idea was that you were training to please Zeus. But part of the festival would be to visit the temple, visit the cult statues, making offerings, celebrating and seeing your family,” said David Gilman Romano, a professor of Greek archaeology at the University of Arizona.
The combination of Greek sport and worship led the Roman Emperor Theodosius I, a Christian, to ban the Olympics in 393 A.D.