Jan Posmourny
| Date | Swim | Route | Km | Age | Time/Place |
|---|---|---|---|---|---|
| 2008 May 3 | FINA World Championships | (Sevilla) | 25 | 20 | 05:39:22 (17/23) |
| 2008 May 3 | FINA World Championships | (Sevilla) | 5 | 20 | 00:58:50 (29/33) |
| 2008 Sep 9 | European Open Water Swimming Championships | (Dubrovnik) | 10 | 20 | 02:00:34 (24/36) |
| 2009 Jul 17 | FINA World Championships | (Rome) | 10 | 21 | 01:55:17 (30/48) |
| 2009 Jul 17 | FINA World Championships | (Rome) | 5 | 21 | 00:57:07 (17/41) |
| 2010 Jul 17 | FINA World Championships | (Roberval) | 10 | 22 | 02:06:44 (25/36) |
| 2010 Jul 17 | FINA World Championships | (Roberval) | 5 | 22 | 00:58:00 (9/30) |
| 2010 Aug 4 | European Open Water Swimming Championships | (Budapest) | 10 | 22 | 01:57:06 (28/38) |
| 2010 Oct 23 | FINA 10km World Cup (Fujairah) | Fujairah buoy course | 10 | 22 | 01:56:43 (25/51) |
| 2011 Apr 17 | FINA 10km World Cup (Santos) | Santos buoy course | 10 | 23 | 02:06:39 (14/49) |
| 2011 Jul 16 | FINA World Championships | (Shanghai) | 10 | 23 | 01:56:50 (32/67) |
| 2011 Jul 16 | FINA World Championships | (Shanghai) | 5 | 23 | 00:56:35 (20/50) |
| 2011 Aug 13 | Universiade | Shenzen buoy course | 10 | 23 | 02:03:56 (11/18) |
| 2011 Sep 7 | European Open Water Swimming Championships | (Eilat) | 10 | 23 | 01:53:38 (15/31) |
| 2011 Sep 11 | European Open Water Swimming Championships | (Eilat) | 25 | 23 | 05:11:41 (14/20) |
| 2012 Jan 29 | FINA 10km World Cup (Santos) | Santos buoy course | 10 | 24 | 02:13:51 (32/59) |
| 2012 Apr 24 | FINA 10km World Cup (Cancun) | Cancun buoy course | 10 | 24 | 01:58:28 (20/50) |
| 2012 Apr 26 | FINA Grand Prix (Maratón Cancún) | Cancun 15km | 15 | 24 | 03:03:09 (9/25) |
| 2012 Sep 12 | European Open Water Swimming Championships | (Piombino) | 10 | 24 | 02:00:14 (21/37) |
| 2012 Sep 16 | European Open Water Swimming Championships | (Piombino) | 25 | 24 | 05:14:22 (14/22) |
| 2013 Jul 17 | Universiade | Kazan buoy course | 10 | 25 | 01:57:49 (11/28) |
| 2013 Jul 19 | FINA World Championships | (Barcelona) | 10 | 25 | 01:49:54 (22/65) |
| 2013 Jul 19 | FINA World Championships | (Barcelona) | 25 | 25 | 04:48:53 (10/35) |
| 2013 Jul 19 | FINA World Championships | (Barcelona) | 5 | 25 | 00:53:45 (21/52) |
| 2014 Mar 29 | FINA Grand Prix (Maratón Cancún) | Cancun 15km | 15 | 26 | 03:10:35 (7/25) |
| 2014 Apr 5 | FINA 10km World Cup (Cancun) | Cancun buoy course | 10 | 26 | 01:57:14 (20/39) |
| 2014 Jul 26 | FINA 10km World Cup (Lac St-Jean) | Lac St-Jean buoy course | 10 | 26 | 01:59:32 (15/23) |
| 2014 Aug 17 | European Open Water Swimming Championships | (Berlin) | 25 | 26 | 05:22:36 (12/18) |