Overnight needed - making for 2 full days drive.
Avoid Paris - traffic is a nightmare, so my suggested route, although on map it looks like you're going out of the way, the roads are easy to follow and you'll miss the M25 of Paris!!!!

From Calais aim for Reims then Troyes -Overnight here.
Then Dijion, Lyon, Orange, Nimes then down the coast past Montpellier, Naronne then almost there !!!!

Tolls approx £180 round trip..rip off....

Fuel - diesel 45litre tank - 1 fill up enroute down and 1 enroute back.Plus last full up in Calais as cheaper than in Kent !!

Take Calais to Bauvais, then head on M way Euro disney and Charles de Gaulle. Head for Melun and then Fontenbleau. Keep in direction of Nevers and Clermont Ferand, take Millau bridge, Beziers and then Perpignan.

Cant go wrong!!

Have you ever taken the P&O/Brittany ferries routes to Bilbao/Santander and driven down from the north instead ?

No Mc_f I'm not very sea faring.

Plus I see more opportunities to make a few quid in France.

Profits can be made in Spain too, but I leave it to those who are more frequent visitors to Spain to deal with the gringos.

BTW he is over for the Wolves match!

Stand by your beds, get another barrel of beer on standby