Maybe it improved since the time I had to do Rennes-Toulouse, which is good (although it should be better). FWIW the SNCF website still says that the average is

Maybe it improved since the time I had to do Rennes-Toulouse, which is good (although it should be better). FWIW the SNCF website still says that the average is 10h30, 6h30 being the best.