It's a hot day but Bethany Spector wants to get a quick run in, one of her last before December 9, marathon day.

"You want to work up a little bit of a sweat before you start running," she said. 

Spector says she's no stranger to distance running. She ran in high school and college and now is a middle school cross country coach but even this seasoned athlete isn't immune to pain.

"I was diagnosed with a stress fracture in combination with a muscle strain," Spector said. 

Stress fractures and muscle strains is just some of the musculoskeletal injuries long distance runners experience, according to experts at the University of Hawaii's John A Burns School of Medicine. They also see cramps exhaustion, vomiting, nausea. Sometimes, people fall and have road rashes.

Extremes after an extreme 26.2 mile race. So if you're feeling that cramp coming on, or a muscle getting pulled, here's what the doctor orders.

"Listening to your body is exactly what you need to do," Dr. Chad Cryer, John A. Burns School of Medicine, said. 

Cryer, a runner himself, says before training, runners should do their homework: learn about proper shoe fit, hydration, and nutrition. 

If something feels off, adjust.

"Changing your training regiment usually can help get you to the marathon," he said.

The same thing applies to race day. Dr. Cryer says stick to your training routine: stay hydrated and eat foods that you ate during your months or weeks of preparation. And stretch but not to much. 

"stretching in general loosens you up makes you less susceptible to injury," Cryer said. 

Dr. Cryer says a little stretching right before the race can help, and if you've made stretching part of your training, stick with it. But most importantly, have fun.