Risk of death during marathons—country-wide studies
| Author | Participants | Country | Deaths | Median age | Mean age | Deaths per 100 000 | 1 Death per |
| Redelmeier and Greenwald4 | 3 292 268 | USA | 26 | 41 | 0.79 | 126 626 | |
| Mathews et al5 | 3 718 336 | USA | 28 | 41.5 | 0.75 | 132 798 | |
| Kim et al6 | 3 949 000 | USA | 25 | 0.63 | 158 730 | ||
| Webner et al7 | 1 710 512 | USA | 10 | 0.58 | 171 005 | ||
| Nilson and Börjesson8 | 479 221 | Sweden | 0 | 0.00 | – | ||
| Total | 13 347 166 | 89 | 41.5 | 41 | 0.67 | 149 968 |