As for me, Gwendy, I don't translate it. I use the English word in my French speech. Anyway I prefer to be a living hiker than a watcher of hikes on the screen.
Certainly, it's a good translation... but there are "fuite en avant" that don't happen on the road...There are lists of road movies on the web : Easy Rider / Thelma & Louise / The Grapes of Wrath / Pierrot Le Fou / Little Miss Sunshine...