
Adapted from BMJ 19 April 2025
The Race Associated Cardiac Event Registry in the US indicates that in almost 30 million runners who ran full or half marathons, there were 176 cardiac arrests over the three years from 2020 to 2023.
This was 1.12 per 100,000 male runners and 0.19 per 100,000 in female runners.
The death rate in those who sustained a cardiac arrest is now 34%. This was 71% before 2010.
This information should be generally reassuring to those who are training for marathons.