Karl Meltzer is the record holder for the most 100-mile trail wins and most 100-mile wins in one season. He joined the Nation with a studio audience the day before Way Too Cool 50K to discuss his race strategies:

• How does he break up a 100-mile race
• How does he alter his training when he is injured
• How has his training changed over the years
• His multi-day records and upcoming attempt to break the 2200-mile Appalachian Trail record
• How is a multi-day race different mentally and physically from a 100-mile race

He also talks about Wings For Life World Run coming up on May 4th. 100% of the $50 race fee goes to find a cure for spinal cord injuries.

Check out this video of Karl's Red Bull Human Express, his 2064-mile Pony Express record run in 2010.

Check out our video simulcast HERE

"Race Course in Review" by Vasque Running Shoes

Take the Tailwind Challenge at: Tailwind Nutrition

Check out the cool headlamps made for trail running at Petzl