Another 26-year-old runner, who became unwell, is being kept in an artificial coma. This runner suffered heat problems, but is now no longer in a life-threatening condition.
13 participants needed hospital treatment during the race. The Red Cross reported 540 interventions.
Chris Goossens, a sports doctor, calls for participants to be obliged to produce a certificate for all events like the 20 km of Brussels requiring strenuous physical effort: "It won't rule out any risk, but you can eliminate the grey and black zones. There are a number of risk factors like heart rhythm disorders that may be fatal.