WATR has been supporting the OD100 horse enduro for well over 15 years. The OD100 has several options for the horses to run. They have the option of a 25, 50, or 100 mile course. The horses run from 0515am to about 1000pm for the fastest groups. They have 24 hrs to complete the 100 miles or they are pulled from the course. WATR supports the OD100 by clearing the trails of trees and hazards, marking the course for day and nighttime racing and clearing the course. It takes 4 people a minimum of 4 days of work to get everything correct for the safety of the horses and riders.