Spartathlon

Spartathlon is a 246-kilometre (153 mi) ultramarathon race held annually in Greece since 1983, between Athens and Sparta, the modern town on the site of ancient Sparta. The Spartathlon is based on the run of Pheidippides, an Athenian messenger who travelled from Athens to Sparta before the Battle of Marathon in a day and a half to seek aid against the Persians. Five Royal Air Force officers attempted the course in 1982 and the competition was started the next year. Considered one of the most difficult ultramarathons because of its stringent cutoff times, hilly terrain, limited crew support opportunities and hot weather, the race has gained exceptional popularity, attracting runners from each continent. Entry spots are also highly coveted as organizers limit the field to 400, forcing most applicants into a lottery. Spartathletes must run from Athens along the coast of the Megara Gulf, across the Isthmus of Corinth and over Mount Parthenion before descending into Sparta, passing through 75 check points.