- Begins in:
- Mammoth Hot Springs, WY, United States
- Created By:
- timmy deloriea Best Time: 4:05:00
- upper loop of grand loop road yellowstone national park. grades from 4-8% the longest being dunraven pass which goes up to 8900 feet above sea level. stops for food/water at tower jct, tower falls, and canyon villiage. fill up water bottles at canyon the next services are in mammoth at the end of the loop.
- Bike Ride