'Marathon County, WI' definitions:

Marathon -- U.S. County in Wisconsin

From: Gazetteer 2000
Name :
Marathon -- U.S. County in Wisconsin
Population (2000) :
125834
Housing Units (2000) :
50360
Land area (2000) :
1544.961790 sq. miles (4001.432497 sq. km)
Water area (2000) :
31.179336 sq. miles (80.754105 sq. km)
Total area (2000) :
1576.141126 sq. miles (4082.186602 sq. km)
Located within :
Wisconsin (WI), FIPS 55
Location :
44.900795 N, 89.738490 W