Many people visit the Grand Canyon in Arizona. Maybe one percent of those visitors make the trek to the bottom. A smaller percent do the hike known as the Rim-to-Rim (R2R). The percentage only gets smaller of those who do it in one day. Sun City residents Mike Grantham, Larry Lindahl, and Doug Jenks did just that on Thursday, September 7. What existed on avid hiker Doug’s bucket list, became a reality when Mike and Larry with their triathlete experience brought their endurance training knowledge to the adventure.