Use this for train schedules.
https://reiseauskunft.bahn.de/bin/query.exe/en
July travel may not be in the schedules yet. So use an April date on the same day of the week you expect to travel.

Estimate driving times here.
https://www.viamichelin.com/
Add about 5-10% for trips longer than 2 1/2 hours.

Make sure you are not in a big city or non-touristy smaller one on a Sunday when most shops are closed.
https://about-france.com/holidays-sundays.htm

Stu Dudley