John Brierley's guide lists the number of km each on paths, secondary roads, and main roads. Out of 33 stages, there are only two areas that have more than 5 km along a main road: 1) 8.9 km from Larrasoana to Cizur Menor in stage 3 at Pamplona, 2) 4.7 km entering Leon in stage 20, and 8.5 km...