Here are two videos that might provide some inspiration for your training.
The first was originally posted by GZ and is on the Dolomites Vertical Kilometer Skyrace. As the race title suggests, it is a 3,280 vertical gain race (over 1.3 miles) going straight up in the Dolomites of Italy. However, in case anyone thought Killian was invincible, he is not. In this race he placed 3rd with a time of :34.03. First place went to Nejc Kuhar of La Sportive with a time of :33.33 and second to Saul Rodriquez Padua with a time of :33.52.You can find the results to the race here.
The second video is a very nice complete race recap of the 2012 Cavalls del Vent. You can see that here Killian was in the lead the entire race, while Tony made an incredible comeback to pull off second. Full results are here.
Ultra Cavalls del Vent 2012 full race from Essentia Foto Disseny on Vimeo.
Both provide great inspiration to keep the hammer down during these snowy months. They also show the European style of racing versus the American style. I don't know which one I would prefer more, as I've never been to Europe, but you can see how crowds, cutting switchbacks, having crew members along the course, and FULLY stocked aid stations really changes things.