Risk of death during marathons by sex—country-wide studies
| Author | Males | Females | Male deaths | Female deaths | Male deaths per 100 000 | 1 Death per (male) | Female deaths per 100 000 | 1 Death per (female) |
| Redelmeier and Greenwald4 | 21 | 5 | ||||||
| Mathews et al5 | 2 255 060 | 1 463 276 | 22 | 6 | 0.98 | 102 503 | 0.41 | 243 879 |