I help with Kimball Last year too...because Chadron was cancelled best of snow.
I miss the Calamity Pass Enduro. That was a great race, but dusty a lot of years. Ever ridding the Arapahoe Ridge Trail?
Arapahoe Ridge is awesome, been a number of years since they closed it. Owl Mountain is really good too, The FS just opened Owl back up a few years ago, nice to ride that trail again.