Since September 15, Karl Meltzer has run 782 miles.
No big deal. He's got more than 1,000 more miles to go.
The Utah runner, best known for running the entire Appalachian Trail in 54 days in 2008, has taken on his next big challenge.
Meltzer is running 2,000 miles across what was the Pony Express route, crossing the Rocky Mountains and Great Plains from Sacramento, California, to St. Joseph, Missouri. The Pony Express was the primary mail service for the country in the 1860s before the invention of the telegraph.
The 42-year-old is sleeping in an RV each night.
"I wanted to do something that was historic, above and beyond what anyone else has done," he said. "And you've got so much time out there. When I'm by myself, I'm constantly taking it all in, being reminded of how cool it is to do this for a living."
Meltzer's run is sponsered by Red Bull which hosts endurance and extreme-sporting events around the globe.
Meltzer has a paid crew of four people who are making sure he eats mostly fatty breakfasts and carbs and sugar throughout the day. He's running about 7 mph, 50 miles each day. A doctor checks his vitals daily.
Meltzer expects to finish the adventure in late October. You can check his progress at www.karlmeltzer.com.