Freerunning is an athletic and acrobatic discipline incorporating an aesthetic element, and can be considered either a sport or a performance art, or both. Freerunning is similar to parkour, from which it is derived, but emphasizes artistry over efficiency and speed. Freerunning involves interacting with physical obstacles in creative ways, such as by climbing, jumping or running; the obstacles may be purpose-built or may be part of a pre-existing natural or man-made environment. The movements are usually adopted from other sports, such as gymnastics, tricking or breakdancing. Freerunners can create their own moves, flows and lines in different landscapes. Practitioners of freerunning usually do parkour as well. Freerunning was founded by Sebastien Foucan, who discussed the subject in 2003 documentary film Jump London.

Foucan developed freerunning as a more inclusive form of parkour. Parkour's efficient military style obstacle course training lends itself to martial art as a means of weapons avoidance and efficiently closing a distance to an opponent. Freerunning is derived from parkour, but it emphasizes not efficiency but artistry, allowing room for fancy flips and stylistic acrobatics.