With hundreds of lakes and rivers that snake through a million acres of wilderness, the Boundary Waters separating Minnesota from Canada are among the world's best spots for canoeing. Boundary Waters Outfitters will stock your rental Kevlar canoe with portable showers, tents, cooking gear, bait, chairs, and food for a three- to seven-day trip.

Price: $275 to $565 (a guide is extra); www.boundarywatersoutfitters.com