Due to the cancellation of the previous venue, the Villefranche sur Mer course is a scaled back version of last years event with a 6 day and a 72 hour available at this time on the website.
Checkout the website http://www.6jours-de-france.fr/
However, the French Ultra Festival proper makes an appearance starting April 24 2014 in Frejus. The event will feature races from 10 km up to 48 hours as well as Misstinguette, a women-only 7.6 km event.
http://www.french-ultra-festival.fr/
From Multidays.com, post French Ultra Festival 2014 Date Change