The questions and answers as to how to get to the Loire Valley from CDG have featured in many travel forums, with a number of options/proposals, here is our take on it:
If you have decided against using the train to get you away from the Paris area and nearer your Loire Valley destination then the car is the next best option. It can be relatively straight forward - you pick up your hire-car at the airport and follow the signs for the 'autoroutes' - A1/A3.
We would recommend the following options based on getting to
Tours:
1)
Quicker but less scenic and tolls apply.
2)
Longer but toll free and more scenic:
You can of course change your destination to your desired location rather than Tours.
2) So as not to show any bias here is the toll free route displayed on
'Mappy'
https://en.mappy.com/itinerary
This way, depending on when you arrive, you could take in a visit to
Chartres
on your trip into the Loire Valley.