Boston Marathon

He’s pursuing a career as a physician, and running Boston for his late mother

Jack Miller is running the 2025 Boston Marathon for Massachusetts General Hospital.

Jack Miller is running the 2025 Boston Marathon. (Photo courtesy of Jack Miller)

In our “Why I’m Running” series, Boston Marathon athletes share what’s inspiring them to make the 26.2-mile trek from Hopkinton to Boston.


Name: Jack Miller
Age: 26
From: Cambridge, Mass.

I’m running in the 2025 Boston Marathon to support pediatric cancer research and honor my late mother, Victoria, who we lost to cancer. Her battle was a painful reminder of how relentless and devastating cancer can be, and her passing left a lasting impact on my life. Losing her opened my eyes to the critical need for more research and better treatments.

As a clinical researcher at Massachusetts General Hospital and someone pursuing a career as a physician, I’m working toward a future where I can directly contribute to the care and treatment of patients. While I’m still on the path to becoming a doctor, I thought what better way to support a cause so near and dear to my heart than running the Boston Marathon with the Run for MGH team in support of pediatric cancer research. This marathon offers me the chance to raise awareness and have a real impact on the lives of children battling this disease, while also prioritizing my health through training. 

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The Boston Marathon is my way of turning a heartbreaking loss into a force for change. It’s an opportunity to transform my grief into action, contributing to something far greater than myself. Each mile I run represents a step toward a future where fewer children have to fight the same battle my mother did. I’m deeply committed to medical research, understanding that funding and breakthroughs are vital to advancing treatments and ultimately finding cures. This is my chance to make a tangible difference in the fight against cancer today. By running, I’m honoring my mother’s memory, channeling my loss into something meaningful, and supporting a cause that has the power to change lives.

Editor’s note: This entry may have been lightly edited for clarity or grammar.

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