The numbers are staggering. Dean Karnazes just finished running 3,000 miles across America in 75 days, averaging 40-50 miles a day. How important was his crew to the success of the adventure? How cool was it to meet Michelle Obama and run to the White House with 150 kids? And, most importantly, how did he stay healthy while stringing together 300 mile running weeks? Competitor’s Bob Babbitt caught up with the UltraMarathon Man after his most recent endurance adventure. Click here or on the image below to listen to the full interview.