The Paris Marathon 2023 is scheduled for Sunday April 2 2023. It begins on the Champs-Elysées, passes via the Grand Palais, the Place de la Concorde, alongside the Louvre, then to the Opéra (Opéra Garnier), then to the Place de la République, on its way to the Bois de Vincennes which the race encircles. Then returning along the banks of the Seine (Quais de la Seine), via the Eiffel Tower to the Bois de Boulogne. The arrival is on the Avenue Foch which adjoins the Champs Elysées. More information in English is in parisdigest.com/sports/pari...
I will not be taking part as I would only be ready for at the most a 10km race by April next year.