The “Princess” Who Charmed the Paris Marathon

She ran the entire marathon dressed as a "Princess" to raise money for the charity she hopes to work with when she finishes medical school.

From Aleteia

By Cerith Gardiner & Cécile Séveirac

At first, it looked like a moment of lighthearted spectacle, but what followed was something far more meaningful.

There are always a few runners in a marathon who stand out, but at this year’s Paris Marathon, one in particular seemed to belong to another world entirely.

Wearing a bright red ball gown and a tiara, Isaure Delhay ran the full 26.2 miles looking as though she had taken a wrong turn on the way to a ballroom, and in a sea of technical fabrics and determined expressions, she brought with her something altogether lighter, a sense of surprise that rippled through the crowd as she passed.

It is difficult not to smile at the image, and perhaps that is precisely where it begins. Because once something catches the eye like that, it has already done half the work. People look, they laugh, they wonder what on earth is going on, and then, almost without realising it, they begin to ask why.

Delhay knew this would happen. Her decision was not simply playful, but purposeful, as she explained to Aleteia France when she said that her first aim was “to bring visibility to the fundraising campaign I am running with the Helebor association.” The gown, as improbable as it seemed, became a way of opening a conversation that might otherwise never begin.

And it worked.

The video of this “princess” running through the streets of Paris has now been viewed over half a million times online, drawing attention far beyond the marathon itself, while her fundraising campaign for Helebor has already raised nearly €6,000 in support of palliative care.

Devotion to those in need

It's an impressive move, because behind the tiara and the swish of fabric is a young medical student who hopes to work in palliative care, choosing to devote herself to those at the end of life, a path that rarely finds itself in the spotlight. Helebor, the association she supports, works precisely in this quiet space, accompanying patients with dignity, presence, and care, often far from public view.

And through her marvelous marathon, Delhay has understood something very simple about human nature: “When people see something unusual, they stop, they look, and then they listen,” she said, and in that small pause lies the whole strategy. There is no need to insist, no need to persuade too heavily; attention, once captured, has a way of doing its own quiet work.

By the time she crossed the finish line in 3 hours and 50 minutes, the achievement itself almost felt secondary, not diminished, but gently overshadowed by the meaning it carried. What remains is not only the memory of a “princess” weaving her way through the streets of Paris, but the realisation that the image was never about spectacle at all.

And that, perhaps, is where the marvel truly lies. That something so light, so unexpected, could carry something so weighty, and that in the middle of a race defined by endurance, a young woman chose to run not only toward a finish line, but toward a conversation that matters.