A little bit of local language…. (as you can see, I’m far from fluent).

Most common phrases heard in France:
Que Horreur! (when raining)
Bon Courage! (when cycling uphill)
Bonne Route! (on all other occasions)

Most common phrases heard in Spain:
Buen Viaje! (when cycling)
Buen provecho! (when eating)
Mucho calor! (when sweating)

Most common phrases from English speakers:
You’re nuts!