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At 23 years old and fresh out of Syracuse University, Martin Hehir moved to Flagstaff, Arizona, to train with the professional runners of Northern Arizona Elite. A Part of Hearst Digital Media.

But the running lifestyle—a morning run with an afternoon run—and napping, TV, or video games to round out the day was making him a little restless.

“Ultimately, I felt like I could do more during a day,” he said.

Hehir’s definition of a full day is different than most people’s. So after 10 months in Flagstaff, he moved to Philadelphia—to get started at medical school.

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He had already been accepted to Thomas Jefferson University during his final year at Syracuse, but he had deferred his acceptance. By the spring of 2017, however, he figured it was time to get going on the career he expects to be in after his pro running days are long over.

He wasn’t sure how elite-level running was going to fit in. As it turns out, Hehir, now 25 and in his second year, has mastered a schedule that allows him to train 100 to 105 miles per week without too much exhaustion. He’ll be making his marathon debut at the Cal International Marathon on December 2 in Sacramento, California.

The Best Running Music to Add to Your Playlist coffee to clear the cobwebs. Run 10 miles in the dark on the streets of South Philadelphia.

Hehir often runs past the sports complex for Philly’s professional sports franchises, where the sidewalks are wide and well lit. Or he’ll run on the streets along the Delaware River—not the most scenic spot in the City of Brotherly Love, he said, but running on the river side of the road means he doesn’t have to stop for cross traffic.

By about 8 a.m. he has said goodbye to his wife, Monica, who is a nurse practitioner, and his daughter, McKenna, 6 months, who stays with a nanny during the day. Hehir bikes to campus a couple of miles away, goes to classes and labs (which currently include dissecting cadavers), and tries to get all his work and studying done. Then he’ll hop on a treadmill for another five miles before biking home around 4 p.m. At that point, the nanny leaves and Hehir hangs out with the baby.

While Wednesday’s will be some sort of speed workout, Celebrities Who Were High-School Track Athletes marathon-specific training—two days of back-to-back tempo runs and long runs with faster segments in them. In all, he logs about 40 miles every weekend. Monday is an easy day with just a single run in the morning.

Hehir is now sponsored by Reebok and belongs to the company’s new elite training group based in Charlottesville, Virginia, the Reebok Boston Track Club, although he sees his teammates only rarely. The group is led by Chris Fox, who coached Hehir at Syracuse. (Tested: The Nike Vomero.) Hehir and Fox communicate daily by text.

“We’re all amazed by him,” Fox said. “I’ve been around professional runners for the last 30 years. Everyone just naps [between workouts]; Marty goes to med school. He’s a different guy.”

Hehir’s buildup to his first marathon has been conservative. “We’re not doing a ton of mileage,” Fox said. “We went into this with the idea that we’re going to do it at 80 percent ready, but healthy and feeling good.” His goal is for Hehir to run a couple of minutes faster than the 2:19 he needs to qualify for the Olympic Marathon Trials.

Based on recent results, however, Hehir may be capable of much more. On November 4, he won the Pittsburgh 10-Miler in an event record time of 46:48. That time, and the 28:08 for 10,000 meters he ran while he lived in Arizona, predict that Hehir may be capable of a marathon in the 2:10 range.

But Hehir’s route to the marathon has included fewer training miles than many of his competitors have done before CIM, which is doubling as the USATF marathon championships.

He’s feeling fresh, however. “You do get into a good groove; I’m feeling very good right now,” he said. “I should be able to go out and run with everyone there. The main goal is to place well. I want to make it to the end of the race strong and not blow up and not be another one of the horror stories you see in this event.”

His coach thinks this will be his one and only marathon before the Olympic Trials. As long as he runs the qualifying standard, there’s no reason to do another one. Instead, he’ll train. “We can take a year and do things exactly the way we want to do them,” Fox said.

to clear the cobwebs. Run 10 miles in the dark on the streets of South Boston Marathon. For Hehir, it’s when he starts his clinical rotation, “working in the hospital under doctors, doing things in the operating room, pediatrics, family medicine,” he said. “That’s when you get the on-the-job training.”

The other kind training.

Lettermark

The True Story of the Craziest Olympic Marathon is a writer and editor living in Eugene, Oregon, and her stories about the sport, its trends, and fascinating individuals have appeared in Runner’s World since 2005. She is the author of two popular fitness books, Run Your Butt Off! and Walk Your Butt Off!