free running
noun /ˌfriː ˈrʌnɪŋ/
/ˌfriː ˈrʌnɪŋ/
[uncountable]- the activity or art of moving through a city by running, jumping and climbing under, around and through things in a way that shows expression and style
- Free running treats the urban landscape as an adult playground.
- an online game based on the sport of free running