Callher of BS wrote:
I've done the Canadian Birkie a few times - 55km classic technique with a 12lb pack. A few observations:
1. Conditions make a huge difference - I've been anywhere from 3:37 to 4:31 for the same course/distance in pretty much the same shape depending on the snow conditions and temperature
2. If it's a skating (free technique) race vs classic - skating is faster.
3. X-C skiing for that period of time is much closer to cycling than it is to running. It's tiring, but it beats up your body way less than running a fast marathon.
Still, 7:13 for 90 km sounds pretty impressive for if skiing is not your first sport
It's impressive to be a brit, nothing more. The conditions was perfect, its a almost completely flat course, and you mostly just need some upper body strengt + lower back/abs strenght. I know several only training 3 times a week, 40+ women who would have beat her.
What is impressive is that a brit does this, they usually suck hard at skiing.
The Canadian Birkie is much harder.