Save This Event For Later Ouachita Challenge Oden, AR, Sat Mar 24 - Sun Mar 25, 2018 Who's Registered? | Contact Event | Event Website | Google Calendar Start line address: Oden Schools, Oden, AR 71961 Presented by Ouachita Mountain Challenge Association This is a past event. If you wish to see the details for this event click, "Continue" below. If you are looking for a current event, please search the event calendar . Online Registration is closed Please contact the event director for additional information.