Pi Marathon

Pi Marathon is a team-based marathon relay in Paris, France, built around a simple but memorable concept: three runners, 14 kilometres each, 42 kilometres total. Rather than presenting the marathon as an individual test, the event is designed as a shared experience, emphasizing teamwork, atmosphere, and collective achievement. The official site frames it as a convivial format meant to be enjoyed together, with relay teammates free to determine their running order and the race itself set in and around the Bois de Boulogne, one of Paris’s best-known green running spaces.