I didn't think you could climb Stelvio in under three minutes. The W/kg must be through the roof!
I don't know what the usual distance for sprint races is, but since there aren't that many athletes here and they don't do any of those more or less pointless individual time trials like in snowboard cross, it shouldn't have been a problem to have made the course at least twice as long without the races becoming too time consuming.
The relay format sounds a little more interesting though.
The sprint is an unholy abomination that has nothing to do with real ski mountaineering and should have been drowned at birth!
It's a circus act with artificial obstacles
Now I get that they didn't want to put in the long Individual event (at leat 3 longer climbs and downhills with a max of 1900m of altitude gain, no single climb have more the 50% of the total altitude gain), but the Vertical, an uphill mass start race with usually around 700m of altitude gain would have been perfect.
But the IOC probably heared the sprint being described as "short, explosive and action packed" and creamed their pants thinking that the young folk will love it...