The Peru Great Divide Route

I spied this route on the website Andes by Bike and I got excited. it looked remote, tough and spectacular. Neil and Harriet had only just completed it in a north to south direction and we were the first team to ride it northbound, with an extra section from Arequipa to the start. Their notes were detailed and we just had to do the maths to turn all the distances upside down so we did not get lost at key intersections..