The backpacking trail is made up of 3 loops, designed for hiking not portaging and you can camp at designated lakes.
The first lake MapleLeaf Lake is about a 4.4 km hike from the parking lot, I know people have caught splake from shore in the spring not sure about now. You should get a map and plan accordingly based on how far you want to hike. Here is a link to a map.
http://www.algonquinmap.com/index.html