 The road travels through the areas of Occitania, Limousin and Midi-Pyrénées.It starts at Vierzon in Cher and finishes in the south at Montauban in Tarn-et-Garonne.However further sections between Orléans and Vierzon (A71) and Montauban-Toulouse (A62) could be renamed the A20 in the not too distant future.