Mainly 1 hour (was the case in 2016) apart from Spa 3 hours. Maybe Jerez and Estoril will be longer in 2017.
Info@HistoricEndurance.com
Some of my blokes go and race there because of the nice ambiance.None of us is dreaming about F1 any more after all!
I do appreciate tracks such like Estoril which is fantastic but so far away from Paris unfortunately.