Originally Posted by
drowling23
They are riding on hard packed snow, on level terrain, with tires likely inflated to maximum allowed pressure. If you look at bike seats, most are raised to racing position, not for leisurely riding. Also looks like they have really light bikes (probably carbon all round), and not a single one of them has a suspension fork, fenders or a rack. Of course they are going fast, why wouldn't they be?
"Of course they are going fast"? Have you ridden a fatbike... on snow ... ? You make it sound so easy to go fast.
These are groomed ski trails, not that hard packed. I did a similar race in Minneapolis in February -
35K Fatbike Loppet:
Max pressure will dig into these groomed trails, you need to run fairly soft (6-8 psi).