Downhill skateboarding jousting (the riders start from facing slopes and meet at the bottom)
German wheel velodrome racing
Downhill rollerblade crossfit tandem deadlift (pic related)
Strongman convict quartering (4 big guys pull a death row inmate's limbs apart)
Skydiving wrestling
Dragster jousting
Lava wakeboarding
Rollerblade racing but racers hold an open umbrella and airplane engines blow from the back
Pump hydrofoil relay race
Pump hydrofoil jousting
100 metres freestyle swimming race downwards
Downhill beekeeping... k I'm out of ideas