Wausau Service Center 5301 Rib Mountain DriveWausau Wisconsin 54401 WI Marathon 5301 Rib Mountain DriveDirections (608) 264-7447 Monday 08:30 am - 04:45 pm Tuesday 08:30 am - 04:45 pm Wednesday 08:30 am - 04:45 pm Thursday 08:30 am - 04:45 pm Friday 08:30 am - 04:45 pm Saturday Closed Sunday Closed