Pleasant Ridge Backyard Ultra! is an endurance race that will be sure to test your limits. Run as many 4.1 mile laps every hour on the hour until you are no longer able to continue.  If a runner is unable to complete a lap or returns after the hour is up they will be given a DNF. The last person running who is able complete a full lap will be declared the winner. There are no runner categories, every runner starts at the same time. Race begins Saturday, January 30 and could continue through Sunday, January 31.