This gallery is a collection of photos taken while hiking the Grand Canyon Rim to Rim and back. But before we get to the pictures, here's the data!
Note the bottom of this chart shows heartrate in red, over distance (averaging 124bpm over the duration of the hike - 13 hours) and the average temperature of 82F in blue. The x-axis shows the distance, and the y-axis the elevation. You can see the elevation change in the silhouette gray.