It’s over 10 years since we did it but if I remember correctly it cost about £250 for the toll roads. I thought this was expensive at the time but I expect it’s even more now. The most expensive ones are travelling through France but then the toll roads in Spain seem to be shorter and cheaper. Maybe something to consider is coming in on the ferry at Roscoff rather than Calais as it’s a much shorter route into Spain. I did hear that they scrapped the toll roads in Spain but I could be wrong.
.
