Gravel climb from col de chaussy to col de la madeleine

If you're in the area I highly recommend you to take on the ride on the "route de la buffaz" it's a beautiful scenery a well tamed gravel and a faire bit of elevation.
You can even warm up with col de chaussy which is beautiful and just the right length.

(35 mm slick is enough, as long as it's dry I wouldn't go on with less cause of the descent to join col de la madeleine)