Unique combinations of geologic color and erosional forms decorate a canyon that is 277 river miles (446km) long, up to 18 miles (29km) wide, and a mile (1.6km) deep. Grand Canyon overwhelms our senses through its immense size. Read More. On the South Rim, no need to drive around in traffic. Park your car and ride shuttle buses around the village and out to scenic overlooks. Considering a visit in 2020? Reservations recommended for Mather Campground on S. Rim (No hookups) North Rim CG first-come, first served. Last updated: May 11, 2020.