From Eau Claire: Take US-53 N toward Superior. Exit 95A to merge onto WI-29 E/WI-29 Trunk E toward Green Bay. Take the WI-107 ramp to Marathon City/Merrill. Turn right at Main St./WI-107-S. Turn left at 4th St./Co Road Nn.
From Green Bay: Take Shawano Ave./WI-29 W/WI-29 Trunk W to US-51 N. Follow US-51 to Exit 190 for N. Mountain Rd./Country Road NN. Keep left at the fork, following signs for Marathon County NN/WI-29 W. Turn left at Co Road Nn/N. Mountain Rd.