To meet up with my Basque Country tour in early May, I've decided to not take a connecting flight from SFO to BIQ via CDG due to the flight times and duration of the layover at CDG. Taking the high-speed rail from Paris to Bayonne feels a lot more relaxing, plus I have more control over my timings. I plan to fly from SFO to CDG direct (~11 hours). I realize there are two options: (1) Take the train to Bayonne from the CDG train station, which would take 5-6 hours. (2) Get myself over to the Montparnasse train station in Paris, where I can take a faster train to Bayonne for just under 4 hours.
Any thoughts on the better option? The lower hassle move would be to take the train directly from CDG—versus take a bus to Montparnasse station—but 5-6 hour train ride seems very long. Does anyone have experience with one or the other or both?
I haven't yet booked my flight but can either land in the late morning or early afternoon. I am also willing to stay a night in either Paris or near the airport to rest between the flight and train ride.
Thanks in advance for your help!