Nogaro's annual historic meeting featuring, on their 50th anniversary, a round of the FIA Formula 1 Championship plus other historic races. See
http://www.circuit-nogaro.com/fr/62.html . There is info regarding accommodation etc on the website – albeit in French but if you want help or guidance please PM me. I live close and am a marshal there. Great area, good food, wine, Armagnac. Flights from UK to Toulouse, Pau, Tarbes, and Bordeaux.