Registration for the next running of Adams 12 MS XC isn't open yet. Save it on Trehko and we'll remind you the moment it opens.
Get reminded on Trehko →Save this race to your wishlist, set a registration reminder, and build a full training plan on Trehko.
Adams 12 MS XC is a road race running event held in Thornton, CO on Oct 8, 2026. The course has a road profile.
Trehko tracks registration status, entry fees, and deadlines for Adams 12 MS XC and thousands of other endurance races. Use the app to set a registration reminder and build a training plan tailored to race day.
Browse by discipline: