Mari Carmen laughing, Madrid, 2023
Mari Carmen · Madrid, 2023
131st Boston Marathon · April 19, 2027

Run4Mari

Run by Jose Seara · #Run4Mari

A celebration of the life of my mother, Mari Carmen — and a run to fund the cancer research that can change the outcome for others.

Race
131st Boston Marathon
Date
April 19, 2027
Fundraising for
MGH Cancer Institute
Donate in Mari Carmen's memory

Her story

In February 2024, my mother Mari Carmen was diagnosed with malignant uterine PEComa — one of the rarest soft-tissue sarcomas known to medicine. She was 85 years old.

Clinical diagnosis
Malignant uterine PEComa
Diagnosed February 2024 · Passed June 22, 2024
In plain terms: a rare, aggressive cancer of the uterus, already advanced when it was found.

PEComa — Perivascular Epithelioid Cell tumor — is so rare that most oncologists will never see a single case in their career. There is no established standard of care. Research is almost nonexistent. My mother had almost no treatment options available to her.

Learn what PEComa is — National Organization for Rare Disorders

Mari Carmen went from diagnosis to leaving us in four and a half months. On June 22, 2024 — my 55th birthday — she passed away. She was 85.

Through those four and a half months, the Gynecology and Oncology teams at Hospital Universitario La Paz and the Sarcoma Unit at the Fundación Jiménez Díaz in Madrid cared for her with extraordinary skill and humanity, and the Community of Madrid’s palliative care unit cared for her at home, as she wished. Against a cancer that offered so few options, they gave her — and our family — their very best. We will always be grateful to them.

For my sister, Cristina

From the day of the diagnosis, she cared for our mother without pause. She opened her home to Mom and Dad, and she gave Mom her last wish — to be at home, surrounded by all her family, on her final day. Mom was never alone. That was Cristina.

She had flown from Spain to New York in 2015 for my first marathon — the New York City Marathon — her first time seeing me race. She stood alongside my wife Sandra, my daughter Alejandra, my son Rafael, my goddaughter Maria, and my nephew Fernando. It was probably one of the happiest trips of her life.

Two races. Two dedications.

2015
New York City Marathon
Running for my daughter — who has celiac disease — raising funds for the Celiac Disease Foundation.
2027
Boston Marathon
Running for my mother — who died of a rare uterine PEComa — raising funds for the MGH Cancer Institute.

In New York I ran for my daughter's disease. In Boston I run for my mother's. Same commitment. Same purpose.

The runner

I'm Jose Seara — a Boston resident, US/Spanish dual citizen, chasing the Abbott World Marathon Majors. I moved to the US from Spain in 2006 and have called Boston home for three years. Seara is my mother's name; at Boston, I get to carry it down Boylston Street.

5
Majors completed
NY · Chicago · London · Berlin · Sydney
3
Majors remaining
Boston · Tokyo · Cape Town
57
Age on race day
April 19, 2027
$15k
Fundraising goal
MGH Cancer Institute

The 2027 Boston Marathon isn't my final major — but it's my most personal one. My daughter, who has celiac disease and is majoring in Psychology with a minor in Behavioral Neuroscience at Northeastern University in Boston, graduates in 2027. Running Boylston Street that April — in my city, in her graduation year, in my mother's memory — is the most meaningful thing I'll do as a runner.

On the official Abbott World Marathon Majors record I appear under my full name, José María Sánchez Seara.

Her life, and the road to Boston

Where your gift goes

Tax-deductible
Massachusetts General Hospital Cancer Institute

One of the world's leading cancer research and care centers. Funds raised through this campaign support research that directly improves outcomes for patients — including those facing rare and aggressive cancers like the one that took Mari Carmen. Every donation is tax-deductible and goes directly to cancer care and research at MGH.

Mass General Brigham is a registered 501(c)(3) nonprofit · EIN 04-3230035. Gifts are tax-deductible to the extent allowed by law.

Double your gift

Many employers match charitable donations — check with yours, and your gift to Mass General Brigham could go twice as far. Your company's matching program will ask for the charity's tax ID: EIN 04-3230035.

The wall

Every gift moves us closer to the goal — and to funding research like the kind that could have given my mother more time. Thank you.

Leave a message

Add a name and a few words to Mari Carmen's wall. Messages appear once approved.

To the teams at Hospital Universitario La Paz and Mass General Brigham, and to everyone who gives, shares, or cheers us on — thank you. Together, we're turning Mari Carmen's memory into more time for someone else.