Growing up, Carrie was the one who always faked a twisted ankle to get out of playing soccer. If she had to run during gym class, she would walk whenever the teacher wasn't looking. She loved the part of adulthood where Phys Ed was no longer a requirement. So how did she find herself signed up for a marathon? A marathon is just 26.2 miles, but the training it takes to get there is infinite. How does one even prepare for a marathon?...