BOSTON — Joan Benoit Samuelson has been writing her story stride by stride for 40 years.

“I've challenged myself with storytelling,’ Samuelson said. “There’s nothing like going out on a limb."

Now at 61-years-old, she plans to write another chapter by running in the Boston Marathon to celebrate the anniversary of her record-setting victory in 1979.

RELATED: Joan Benoit Samuelson talks 21st Beach to Beacon 10K

The  Maine running legend ran a course record to win the 83rd Boston Marathon in 1979.

At the time, "Joanie" was just a 21-year-old student at Bowdoin College, widely unknown to the professional running community.

Wearing her Polar Bears singlet and a Red Sox hat, she ran from Hopkinton, Massachusetts, to Boston's Boylston Street in a women's division-winning time of 2 hours, 35 minutes, 15 seconds.

This time she plans to come within 40 minutes of that time.

RELATED: Research: Runners live longer

Samuelson would win the 1983 Boston Marathon and set another world record, before going on to win Olympic gold and gaining worldwide fame in 1984.

When asked if she ever thought she would be running all these years later Samuelson said, “Never. I mean I'm truly blessed to be able to still be out there running let alone trying to master the 26.2 miles.”

Samuelson will join 170 other Mainers in Monday’s race. 

RELATED: MARATHON MONDAY: Nearly 200 Mainers set to toe the line in Beantown

"I consider it a two-way road out there,” Samuelson said. “Everyone has an inspiring story or stories, and we can all inspire each other.”

That is why she founded the now iconic TD Beach To Beacon 10K in Cape Elizabeth to bring people from all over the world together with amateur runners in Maine. 

"We're getting close to the final chapters,” she said. 

Samuelson will be wearing bib 1979 in honor of her first victory.