These data layers represent trails for Marathon County, Wisconsin in 2015. It is a feature class within the geodatabase 'Marathon_Trails_2015.gdb'. The feature layers included in this geodatabase are 'ice_age_trail' and 'mountain_bay_trail'.
For access to the most current data for this county, please visit: http://www.co.marathon.wi.us/Departments/ConservationPlanningZoning/GEOServices/GeographicInformationSystem%28GIS%29/GISData.aspx