Human powered aircrafts go head to head
22 September 2013 Last updated at 10:56 BST
Tens of thousands of people turned out to Long Beach in California, America, to watch the latest brave attempts at human powered flight.
The event saw aircrafts launched off a 10m ramp and made to fly. But they collapsed into the water below before too long!
Teams were judged on their creativity, showmanship and distance travelled.
This year the Yellow Chicken team achieved a world record of more than 78m - beating the previous record of 70m set last year.
Check out the clip to see some of the competitors in action...