A 26-year-old man from New York, is asking strangers, his family and friends, to "step out of their comfort zones" and join what he calls the 50/31 challenge – a month-long fitness and fundraising event which raises money for the National Brain Tumor Society.

"When I was 10-years-old, I lost my dad to brain cancer," Brian Lewis, a resident of New York, New York, told Fox News Digital.

"I thought this would be a good opportunity to kind of give back and do something good."

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Lewis started the challenge in 2020 by encouraging loved ones to run 50 miles in a span of 31 days.

running group

Brian Lewis (pictured second from right) and his friends are participating in the 50/31 challenge — running 50 miles in 31 days, to honor Lewis' dad, Marc Lewis, who died in 2007. (Fox News)

Since then the challenge grew into something greater, by raising support during the month of May, which is Brain Cancer Awareness Month.

This May in 2023, Lewis has so far raised $12,251 through 50/31 challenge participants. The goal is $50,000.

"In 2021 [I] thought it would be a good idea to open it up to the public and rally people together for a good cause and get people moving," Lewis said.

Lewis saw over 600 individuals join the cause in 2022. The participant count for 2023 has swelled to 1,052 and is still growing.

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Lewis' father died from brain cancer when he was just 10-years-old.

Lewis' father died from brain cancer when he was just 10-years-old. (Brian Lewis)

"Tying it to a good cause is a way that everybody can get involved in a community event…and create awareness for something that means a lot to a lot of people I've met," Lewis commented.

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When people push their limits, they are able to see how capable they truly can be, he added.

brian with dad

Lewis started the 50/31 challenge three years ago as a fun challenge with friends, since then, he has partnered with the Nation Brain Tumor Society to raise awareness for their cause. (Brian Lewis)

"My goal is that people start to see what they are really capable of when people come together and start making a difference," Lewis said.

Lewis is joined by his friends and his family for the challenge who also recognize the importance of being active and spreading awareness.

Christian Spagnuola, a close friend of Lewis', has been a part of the challenge for three years and continuously finds himself returning to it.

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"I had a cousin that was born with a brain tumor, so I run for Brian [Lewis], I run for her and I run for my family," Spagnuola told Fox News Digital.

Lewis and friends

Jordan Deitch (pictured on the left), Brian Lewis (pictured in the center) and Christian Spagnuola (pictured on the right) have participated in the 50/31 challenge since the beginning.  (Fox News)

"Even when I'm at mile 40, and I feel like I can't go any longer, I push through because I know what she struggled through and the perseverance she showed at such a young age," Spagnuola added.

While participants can walk the 50 miles instead of running, Lewis does encourage those who participate to test their strength.

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"It's not an outlandish goal. It's challenging, definitely, but it's feasible. Just push yourself," Lewis said.

amy and father

Amy Lewis, Lewis' older sister, was only 15 when she lost her father Marc Lewis to brain cancer. (Amy Lewis)

While the challenge encourages staying active for a good cause, Lewis, along with his older sister Amy, reminds others to run in memory of their father Marc Lewis.

Lewis said their father enjoyed "mowing the lawn," "spending time with family" and "being a dad."

Marc Lewis fought brain cancer for six months and 29 days before his passing on May 17, 2007.

"I think [my dad] would say, ‘Good job.' "I think he'd be very proud."

— Brian Lewis

Amy Lewis, a self-proclaimed "Daddy's girl," was just 15 when her dad died.

She said she remembers him as being "the life of the party" and how there was a "huge void" in their family after his death.

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"I'm beyond proud of Brian for creating this challenge. It's amazing to see his creative spirit come to life [by] pairing together his love for fitness, sports and activities, while honoring our dad in this way," Amy Lewis told Fox News Digital.

lewis

Amy Lewis (pictured on the left), Brian Lewis (right) and their mother, Joan Lewis (center) pose in a photograph together. Joan and Amy Lewis said they are both proud of what Brian Lewis has done in his father's memory. (Amy Lewis)

Lewis' mom, who has had two hip replacements, participates in the challenge in spite of extra difficulty that may come with the 50-mile goal.

"I am so proud of Brian for carrying on his father's memory with the 50/31 challenge, and collaborating with the National Brain Tumor Society to help other who are also dealing with this dreadful disease," Joan Lewis, Lewis' mother, told Fox News Digital.

Lewis' family and friends agree that the 50/31 challenge is worth pushing yourself just a little bit harder for one month out of the year.

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"[Those with cancer] are really going through the struggles and the hardships of life and for us to run and raise money for a great cause, that's the reason I get up every May and run 50 miles for the 50/31 challenge," Jordan Deitch, a 50/31 challenge veteran and friend of Lewis', shared with Fox News Digital.

amy and brian interview

"It's amazing to see [Brian's] creative spirit come to life [by] pairing together his love for fitness, sports and activities, while honoring our dad in this way," Amy Lewis told Fox News Digital. (Fox News)

In total, Lewis has raised nearly $68,000 for the National Brain Tumor Society.

If you'd like to join the 50/31 challenge, visit: https://linktr.ee/fiftythirtyone

CLICK HERE TO SIGN UP FOR OUR LIFESTYLE NEWSLETTER

You can also find the link on the fiftythirtyone instagram page and download the Nike Run Club app. 

50/31 split

You can sign up for the fiftythirtyone challenge by checking out the charity's Instagram page and clicking the link in the bio. (Fox News/Brian Lewis)

"Don't be scared. Step outside your comfort zone. Sign up and get it done. No excuses," Lewis said in his message to hopeful participants.

"I think [my dad] would say, ‘Good job,’" Lewis added. "I think he'd be very proud."

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