The bike ride by Jesson from Dawson to Nome in the middle of the winter is epic. It is worth reading about it in the article and then looking at a map. And done at -40. As Robert Service would say:
There are strange things done in the midnight sun
By the men who moil for gold;
The Arctic trails have their secret tales
That would make your blood run cold;
The Northern Lights have seen queer sights,
But the queerest they ever did see
Was that night on the marge of Lake Lebarge
I cremated Sam McGee.
Mike