2017 Parkour International Jam: Daredevils Flip, Climb, Jump Through San Francisco

SAN FRANCISCO, CA — Did you happen to notice individuals or groups of people randomly running, climbing, flipping and jumping their way through the City over the weekend?

You were witnessing the 2017 Parkour International Jam in San Francisco, where creative ninjas use their bodies to make their way over, through and around obstacles.

There's a National Ninja League, with qualifying competitions culminating in a national championship next February.

Learn more about the National Ninja League.

-Video and image via Fresco