From: Analysis of swimming performance in FINA World Cup long-distance open water races
 | Distance (km) | Annual fastest | Annual ten fastest | ||
---|---|---|---|---|---|
Women | Men | Women | Men | ||
Peak swimming speed (m/s) | 5 | 5.1 ± 0.2 | 5.5 ± 0.2 | 5.0 ± 0.2 | 5.4 ± 0.2 |
10 | 5.1 ± 0.3 | 5.4 ± 0.2 | 5.0 ± 0.3 | 5.4 ± 0.2 | |
25 | 4.6 ± 0.3 | 5.0 ± 0.3 | 4.5 ± 0.3 | 4.9 ± 0.3 | |
Age of peak swimming speed (years) | 5 | 22.4 ± 4.6 | 26.7 ± 3.7 | 22.5 ± 1.2 | 24.8 ± 1.0 |
10 | 24.1 ± 4.6 | 25.6 ± 4.7 | 23.4 ± 0.9 | 25.6 ± 1.6 | |
25 | 26.8 ± 4.0 | 27.9 ± 3.8 | 23.8 ± 0.9 | 27.2 ± 1.1 |