Okay, so maybe it's not as crazy as Calcio Fiorentino (an Italian sport which can fairly be regarded as a cross between rugby and bare knuckle boxing - see here), but the Red Bull crashed ice qualifiers is not for those who shirk physical challenges.
The sport is a four man full-contact, high-speed, downhill ice skating race along a 440 metre track, with steep turns and vertical drops in which the first to the bottom wins.
Registrations for entry are open until the 22th of December.
See more here.
https://www.youtube.com/watch?v=s9wqrAEA06s&feature=youtu.be