I have to admit that I have a bit of anxiety about the first day from St. Jean Pied de Port to Roncesvalles because it’s a 15 mile walk but an ascent of about 4,500 feet. That’s a bit of a hill! I did come across this video of the first day so now at least I know what it will look like. https://www.youtube.com/watch?v=bZNrSdO33QQ&feature=youtu.be Cut and past the URL and skip the add when you can to watch.
Pray for good weather.