| Year |
Event |
Status |
Participants |
NOCs |
| 1908 |
1,500 metres Freestyle, Men |
Olympic |
19 |
8 |
| 1912 |
1,500 metres Freestyle, Men |
Olympic |
19 |
11 |
| 1920 |
1,500 metres Freestyle, Men |
Olympic |
24 |
13 |
| 1924 |
1,500 metres Freestyle, Men |
Olympic |
22 |
12 |
| 1928 |
1,500 metres Freestyle, Men |
Olympic |
19 |
13 |
| 1932 |
1,500 metres Freestyle, Men |
Olympic |
15 |
8 |
| 1936 |
1,500 metres Freestyle, Men |
Olympic |
21 |
10 |
| 1948 |
1,500 metres Freestyle, Men |
Olympic |
39 |
21 |
| 1952 |
1,500 metres Freestyle, Men |
Olympic |
37 |
22 |
| 1956 |
1,500 metres Freestyle, Men |
Olympic |
20 |
11 |
| 1960 |
1,500 metres Freestyle, Men |
Olympic |
30 |
19 |
| 1964 |
1,500 metres Freestyle, Men |
Olympic |
31 |
21 |
| 1968 |
1,500 metres Freestyle, Men |
Olympic |
21 |
16 |
| 1972 |
1,500 metres Freestyle, Men |
Olympic |
43 |
28 |
| 1976 |
1,500 metres Freestyle, Men |
Olympic |
31 |
20 |
| 1980 |
1,500 metres Freestyle, Men |
Olympic |
17 |
11 |
| 1984 |
1,500 metres Freestyle, Men |
Olympic |
27 |
19 |
| 1988 |
1,500 metres Freestyle, Men |
Olympic |
35 |
22 |
| 1992 |
1,500 metres Freestyle, Men |
Olympic |
30 |
24 |
| 1996 |
1,500 metres Freestyle, Men |
Olympic |
34 |
26 |
| 2000 |
1,500 metres Freestyle, Men |
Olympic |
41 |
32 |
| 2004 |
1,500 metres Freestyle, Men |
Olympic |
34 |
28 |
| 2008 |
1,500 metres Freestyle, Men |
Olympic |
35 |
27 |
| 2012 |
1,500 metres Freestyle, Men |
Olympic |
31 |
25 |
| 2016 |
1,500 metres Freestyle, Men |
Olympic |
45 |
32 |
| 2020 |
1,500 metres Freestyle, Men |
Olympic |
28 |
20 |