In 2014, at age 68, friends and I did it in 19 days, but stayed 2 days each in Astorga and Sarria for sightseeing . . . so a total of 17 days walking, an average of 11.5 miles/day. Longest day was Leon to Villavente (18 miles); shortest day was Vega de Valcarce to O Cebreiro (7 miles uphill)...