Is the answer obvious? Is it a trick question? I don't know about you, but I couldn't immediately predict a winner. Of course, you can just watch the video to get the answer.

But before you do that, just take a guess. There are definitely some things to take into consideration. It seems to me the biker would expend more energy peddling his way down the hill, compared to the snowboarder who just has to glide. Is that an advantage? You could also say that the biker could, in theory, increase his speed by peddling more, where as the snowboarder has to rely on gravity. Who has the advantage when it comes to traction or on the jumps?

I've completely over analyzed this haven't I? Just watch the damn video (if you haven't already).