Quetico is primarily a wilderness canoeing park. There are 2,200 backcountry (interior) campsites, accessible by canoe, scattered around the park on over 600 lakes.

Canoeists can enter the park at six access points, where ranger stations sell park permits and offer more information, including detailed maps of the park.

Each of the six entry stations offers a different park experience:
Dawson Trail Ranger Station (40 km east of Atikokan) and Atikokan Ranger Station (in the town of Atikokan) are the only park stations accessible by car.
Cache Bay and Prairie Portage Ranger Stations border Minnesota.
Lac La Croix Entry Station is right by the Lac La Croix First Nations Reserve, and both Beaverhouse and the Lac La Croix entry stations are staffed by members of the Lac La Croix First Nations Band.

Contact the park at (807) 597-2735 in advance to receive trip planning information by mail. Each park access station can issue a limited number of camping permits.

Visitors entering Quetico directly from the United States must obtain a Remote Area Border Crossing Permit from Canada Immigration (or by mail from Canada Customs) before crossing.
http://www.cic.gc.ca/english/visit/rabc.html