Google map's walking tacks for Gods

My parents are cycling to Rome now. 
It's officially called a pilgrimage, but for my parents it's more a way of travelling.
I was wondering what route Google Maps would advice them.
You have a button to choose what kind of transport you'd prefer (car, public transport, walk or bike)
And for a change I chose for the walkers icon.
Maps gave me the most epic result. A route that even Jesus would be proud to walk.
I guess this is the one-and-only real pilgrimage route.