A 15-year-old girl died on Sunday after collapsing near the end of the half marathon at the Leiden Marathon in the Netherlands, prompting fresh scrutiny of how races verify the ages of their participants.
The runner lost consciousness around noon, roughly four kilometres from the finish line and about two hours after the start of the 21.1-kilometre race. She collapsed at the junction of Lage Rijndijk and Herensingel, where a band had been playing to motivate runners as they passed by. Paramedics treated her at the scene inside a tent set up to shield her from passers-by. A trauma helicopter also landed at the event. She could not be saved.
The girl was from the nearby town of Oegstgeest. Local media reported that she worked at Villa Beukenhof, a hotel in the town. The hotel’s owner wrote in a social media post that staff were “devastated” by the loss of a “much-loved colleague and a warm, engaging and special person.”
The cause of her medical emergency has not been released.
Questions over the minimum age
The Leiden Marathon’s official minimum age for the half marathon is 16. The Dutch athletics federation, Atletiekunie, recommends that 15-year-olds should not race distances longer than 10 kilometres. How a 15-year-old came to be registered for the half marathon quickly became a focus for organisers in the hours after the death.
Race director Tjeerd Scheffer said the registration system depends on the information runners give when they sign up. “Our system is based on the age details that the participants provide,” he told reporters.
The case echoes a wider debate the running community has had over whether young teenagers should be racing long distances at all, and how race organisers can do more than rely on self-reported information. For younger runners, gentler progressions like a structured couch-to-5K plan are usually a safer place to start than jumping into a half marathon field.
Around 20,000 people had signed up across the weekend’s events, which included a marathon, half marathon, 10-kilometre race and a children’s race of 2.1 kilometres. After the girl’s death, organisers cancelled the 10-kilometre and kids’ races, both scheduled for 1 p.m. Runners already out on the marathon and half marathon courses were allowed to finish.
Weather conditions on Sunday were considered favourable for running, with temperatures around 15 degrees Celsius and a light wind.
Reactions from race officials and Leiden’s mayor
Scheffer said he was deeply affected by what happened. “This is dreadful news, first of all for the family of this girl. But her sudden death is also a devastating blow for her relatives, friends and acquaintances. Our thoughts are with them,” he said.
Leiden’s mayor, Peter Heijkoop, also spoke publicly after the incident. “This is incredibly sad news that has caused huge dismay,” he said. He added that the loss hit him on a personal level too. “As a father, as a lover of running, and also as mayor, I feel deeply for those involved. My heart goes out to the family affected by this.”
A race with a difficult recent history
This is not the first time the Leiden Marathon has faced a serious medical emergency. Two years ago, the race was abandoned after 25 runners were taken to hospital with symptoms of heat exhaustion. Last year, another Dutch road race in Leeuwarden saw several runners fall ill, and one participant later died.
Cases like this raise familiar questions about safety at mass-participation races. The wider picture has been getting better, though. Cardiac deaths during marathons and half marathons have been falling as race medical teams have improved, with on-course defibrillators and trained responders now standard at most major events. Researchers have looked closely at when and where these emergencies tend to happen during a race, and a recent analysis found that today’s marathons and halves are lower risk than ever.
Sunday’s death has drawn attention to a broader question facing road race organisers around the world: how to make sure age limits and medical screening actually keep younger and more vulnerable runners out of events they should not be in. Self-reported registration data is the standard at most mass-participation events, and there is no central system in the Netherlands that flags underage entrants across races.
The investigation into the girl’s death is ongoing, and no further details about her identity have been made public out of respect for her family.
