Years ago when I read about crazy people who ran down and up the Grand Canyon, I knew I wanted to be one of those crazy people too.  On Thanksgiving of 2017, it became official. Traditionally a Grand Canyon trail run is considered a “rim-to-rim” run, which implies an adventure from the north rim to the south rim–14 miles of descent from the north, about a mile along the Colorado River, and a 8 mile climb up the canyon walls to the south rim for a total of 23 miles. Due to the extra logistics required for a return to…