I was standing in front of 10 Barrel Brewing in Bend, OR, waiting to start the 1.5 “shake-out” run to kick off the Under Armour Mountain Series event in Mt Bachelor, and I suddenly realized that I was in the company of some very fit participants. Running has become more and more of an “every-man” (and “every-woman”) sport over the years, but trail racing is some serious business. And I suddenly realized that the race…