Basically a marathon but on snow with planks on your feet, and yes, people do this for fun.
Fun fact: Cross-country skiers consistently record the highest VO2 max values of any athletes in any sport.
Originally Portuguese, but try telling that to anyone three pints deep at the curry house.
Fun fact: Vindaloo is Portuguese, not Indian — descended from vinha d'alhos, it originally contained no chili peppers.