The American Trail Running Association, ATRA, was formed in mid-1996 as a Colorado not for profit corporation to serve the mountain, ultra & trail (MUT) running community. Our mission is to represent and promote mountain, ultra & trail running. We offer individual, club, race and corporate memberships. One of our primary benefits is our quarterly newsletter, Trail Times. Our newsletter includes a national events calendar, thoughtful articles, and timely information about our sport.
