I have heard of people running "rim-to-rim". Although, it is pretty arduous and logistically you would need someone to pick you up whereever you finish off( south or north side). Too tough for me. On my last trip to the Grand Canyon, I went for a 10 mile run along the South Rim at sunrise. Awesome!! Perhaps the most beautiful run that I have ever been on and I have run in some pretty exotic places over the years.
Steve Fleck @stevefleck | Blog