The camino splits shortly after passing through Jaca. The longer of the routes, which visits the monasteries of San Juan de la Peña is the most original of the two. Pilgrims being pilgrims, a shortcut was made which for its shortness has become a well-worn path parallel to the national road.
If you can manage an additional 11.5km, you are advised to take the more southern route to the monasteries. Both paths rejoin in Santa Cilia.
NOTE: The Jaca to Puente la Reina stage splits just before Puente La Reina. Puente is actually on the Northern Route to Sangüesa. Crossing the bridge and entering Puente is not a large detour if you wish to follow the road to Arres (returning over the bridge), and there are services in Puente but no albergue.