At the same time, Prix d'Aviation Michelin was a special prize of 100,000 francs offered for a flight by an aircraft carrying a passenger, taking off from either the department of Seine or Seine-et-Oise, flying over the Arc de Triomphe and the cathedral of Clermont-Ferrand, and landing on the summit of the 1456 meters Puy de Dôme inside six hours starting from the time at the Arc de Triomphe.