Don't have to be just in Britain, they can be anywhere.I'll start the ball rolling,
A423/A361/A425 triangle in Warwickshire, good fast bends with the odd tight one as well just to keep you on your toes.
N152 Andorra to Ripol, this road has to be seen to be believed, 50 miles long and just bend after bend of perfect tarmac. By the time you get to the end you are struggling for breath.
Over to you lot
