Non-stop ultra from the Ancient Stadium of Nemea to the Ancient Stadium of Olympia, with a 28-hour time limit. Aid stations are up to 22 km apart. Main checkpoints: Platani (20.5 km), Skotini (33.5 km), Kandila (48 km), Levidi (61.7 km), Vytina (84.4 km), Magouliana (97 km), Valtesiniko (105.3 km), Perdikoneri (124.4 km), Tropaia (127.5 km), Doxa (136.1 km), Kalliani (139.4 km), Kastraki (145.3 km), Koklama (150.5 km), Aspra Spitia (160 km), Mouria (172.8 km), Linaria (175.1 km). Mostly asphalt, with technical trail sections after Platani (saddle at 800 m), after Skotini (a very hard 2 km climb over rocks, then 4.4 km uphill) and after Valtesiniko (a narrow, stony 1,200 m path above the gorge with views of Lake Ladonas). Levidi to Vytina (22.7 km) is the longest leg, a night crossing of Mount Mainalo on forest road with reflective markers and no food, only a water station at the 1,480 m summit. The climb to Magouliana (1,450 m) is also run at night, with low temperatures. After Kastraki the route fords the Erymanthos river, usually up to about 50 cm deep; never cross barefoot. The Aspra Spitia to Mouria leg follows the Alfeios river through farmland on faint tracks, so watch the markers closely; it may be muddy after rain and organizer vehicles are on hand to help. Individual race open to men and women aged 18 and over. A medical certificate in Greek or English, issued within the 3 months before the start, confirming fitness to run 180 km is required. The finish is in Olympia, just outside the archaeological site. There are 20 checkpoints, all doubling as aid stations, with isotonic drinks, water, soft drinks, chocolate, biscuits, dried fruit and nuts, plus soup and pasta at the night stations. Every checkpoint has a cut-off time; arriving after it or skipping a checkpoint means disqualification. Personal drop bags are handed in at the hotel the evening before or on race morning and are delivered in numbered boxes to the checkpoints. Runners must carry at least 500 ml of fluid on the four legs longer than 15 km between aid stations. A head torch and reflective clothing are mandatory at night and are checked; run on the left side of the road, facing traffic. Bibs go on the chest and back, with name and nationality visible. Music players are not allowed; a mobile phone is recommended for safety. Trekking poles are allowed, but once used they must be carried to the finish. Runners who leave the course must go back to the last aid station they passed to continue. Receiving any medication during the race, getting into any vehicle or using doping means disqualification, and only the race doctor decides whether a runner can continue. Crews must register with their car details and display the race signs; they may help only at the aid stations, may not follow runners on dirt roads or pace them, and any crew violation disqualifies their runner. Runners and crews must attend the race briefing. Runners who drop out must hand in their bib and timing chip at the nearest aid station and sign the withdrawal form; buses take them to the runners' hotel in Olympia. Finishers are expected to attend the post-race events. Objections are filed in writing at the Olympia finish before 21:30 on Saturday, with a €30 fee. Trophies for the top 3 men and women overall, a finisher medal for everyone who finishes and a certificate for every participant.