Έχει πλάκα η σχετική εξήγηση στο βικιπεδικό:
The term parkour IPA: [paʁˈkuʁ] was defined by David Belle and his friend Hubert Koundé. It derives from parcours du combattant, the classic obstacle course method of military training proposed by Georges Hébert. Koundé, who is not himself a traceur, took the word parcours, replaced the "c" with a "k" to suggest aggressiveness, and removed the silent "s" as it opposed parkour's philosophy about efficiency.
Να το βάλω και στο γλωσσάρι, γιατί το «ελεύθερο τρέξιμο» ήρθε μετά το αγγλικό, που ήρθε μετά το γαλλικό.
The term free running was coined during the filming of Jump London, as a way to present parkour to the English-speaking world. However, free running and parkour are separate, distinct concepts — a distinction which is often missed due to the aesthetic similarities. Parkour as a discipline comprises efficiency, whilst free running embodies complete freedom of movement — and includes many acrobatic manoeuvres. Although often the two are physically similar, the mindsets of each are vastly different.