PORTLAND, Ore., April 2, 2015 /PRNewswire/ -- Train Hard. Play Hard. Omission Brewing Company today announced a partnership with IRONMAN as the official gluten-free beer sponsor for all IRONMAN® 70.3® competitions in the U.S.  IRONMAN is considered the most prestigious event series in the sport of triathlon.  With many IRONMAN athletes living a gluten-free lifestyle, Omission will be there to help them celebrate their personal records and toast the top competitors.