Major rapids rated class 5 or higher, hiking opportunities galore, and the sheer beauty of the cliffs and the river make a rafting trip through the belly of the Grand Canyon, one of the seven natural wonders of the world, a journey that should be on every adventurer’s bucket list. Travel company O.A.R.S. has been operating guided, nonmotorized trips down the Colorado River since 1969. Guests can choose from two types of vessels: an inflatable raft that offers a bit more give over rapids and travels more quickly through the water, or hard-hulled dories, which make for a more up-and-down experience through whitewater and go at a more leisurely pace through the canyon. Trips range in length from 4 to 19 days, but on each trip visitors can expect to spend three to five hours a day aboard the boat and the rest of the time hiking around the canyon, eating, or hanging out at camp. For beginners we like the five-day Whitmore Wash to Lake Mead trip, which also includes an afternoon of horseback riding, skeet shooting, all-terrain-vehicle riding, or hiking at Bar 10 Ranch and a scenic helicopter ride into the Canyon. Want to stay longer? Investigate their Lees Ferry to Lake Mead trip, a 14- to 17-day adventure through 47 major rapids, and visits to Marble Canyon, Native American ruins, and more.