Training for a new adventure

Will be pounding out as many hours as possible to get ready for 2 winter races that should prove to be the toughest I've ever done.
The Tuscobia 150 in December and the Arrowhead 135 late January.
Similar but unique, both could be totally uncompromising depending on weather conditions...I have a strategy we'll see how it plays out.
Dry land ski training.....