The Grand Canyon spans up to 18 miles wide, 277 river miles long and a mile deep offering breathtaking views. For the adventurer, the canyon offers hiking, backpacking, mule riding or river rafting through the canyon on the Colorado River. For the sight seer, the Grand Canyon does not disappoint. The South Rim of the canyon is accessible year round whereas the North Rim is closed for the winter. The inner canyon is a harsh desert environment and in the summer months can reach over 100 degrees F. Depending on which rim you choose to visit, the drive from St. George is between 3 or 4.5 hours and is well worth your time.