| Event: | Men's 400m I.M. |
| Competition: | 2010 Short Course Worlds |
| Dates: | 16 December 2010 |
| Competitors: | 35 |
| Win Value: | 3:55.50 WR |
| Gold: | Ryan Lochte |
| Goldnoc: | USA |
| Silver: | Oussama Mellouli |
| Silvernoc: | TUN |
| Bronze: | Tyler Clary |
| Bronzenoc: | USA |
| Prev: | 2008 |
| Next: | 2012 |
See main article: 2010 FINA World Swimming Championships (25m).
The Men's 400 Individual Medley (or "I.M.") at the 10th FINA World Swimming Championships (25m) was swum on 16 December 2010 in Dubai, United Arab Emirates. 35 individuals swam in the Preliminary heats of the event in the morning,[1] with the top-8 finishers advancing on the Final that evening.[2]
At the start of the event, the existing World (WR) and Championship records (CR) were:
| Name | Nation | Time | Location | Date | |||
|---|---|---|---|---|---|---|---|
| WR | László Cseh | align=left | 3:57.27 | 11 December 2009 | |||
| CR | align=left | 4:02.49 | 6 April 2006 |
The following records were established during the competition:
| Date | Round | Name | Nation | Time | WR | CR | |
|---|---|---|---|---|---|---|---|
| 16 December 2010 | Heats | 4:01.76 | CR | ||||
| 16 December 2010 | Final | 3:55.50 | WR | CR |
| Rank | Heat | Lane | Name | Time | Notes | |
|---|---|---|---|---|---|---|
| 1 | 3 | 4 | 4:01.76 | Q, CR | ||
| 2 | 3 | 5 | 4:02.27 | Q | ||
| 3 | 4 | 5 | 4:03.02 | Q | ||
| 4 | 3 | 6 | 4:03.81 | Q | ||
| 5 | 4 | 4 | 4:04.11 | Q | ||
| 6 | 5 | 4 | 4:04.44 | Q | ||
| 7 | 5 | 5 | 4:06.78 | Q | ||
| 8 | 4 | 2 | 4:06.96 | Q | ||
| 9 | 1 | 3 | 4:07.26 | |||
| 10 | 5 | 3 | 4:08.05 | |||
| 11 | 3 | 3 | 4:08.08 | |||
| 12 | 1 | 5 | 4:08.14 | |||
| 13 | 4 | 3 | 4:09.04 | |||
| 14 | 5 | 6 | 4:09.74 | |||
| 15 | 5 | 7 | 4:11.13 | |||
| 16 | 5 | 2 | 4:11.47 | |||
| 17 | 4 | 7 | 4:12.91 | |||
| 18 | 4 | 6 | 4:13.32 | |||
| 19 | 3 | 7 | 4:13.85 | |||
| 20 | 3 | 1 | 4:16.38 | |||
| 21 | 2 | 5 | 4:16.62 | |||
| 22 | 3 | 2 | 4:18.52 | |||
| 23 | 5 | 8 | 4:23.69 | |||
| 24 | 4 | 1 | 4:24.26 | |||
| 25 | 2 | 7 | 4:24.81 | |||
| 26 | 4 | 8 | 4:27.78 | |||
| 27 | 2 | 6 | 4:28.06 | |||
| 28 | 3 | 8 | 4:28.74 | |||
| 29 | 2 | 1 | 4:28.87 | |||
| 30 | 2 | 4 | 4:31.10 | |||
| 31 | 2 | 3 | 4:35.22 | |||
| 32 | 2 | 8 | 4:36.89 | |||
| 33 | 2 | 2 | 4:37.23 | |||
| 34 | 1 | 4 | 4:41.45 | |||
| – | 5 | 1 | DSQ |
| Rank | Lane | Name | Time | Notes |
|---|---|---|---|---|
| 4 | 3:55.50 | WR | ||
| 5 | 3:57.40 | |||
| 3 | 3:57.56 | |||
| 4 | 2 | 4:02.73 | ||
| 5 | 6 | 4:03.76 | ||
| 6 | 7 | 4:04.93 | ||
| 7 | 1 | 4:05.26 | ||
| 8 | 8 | 4:06.39 | ||