Personal Bests| Event | Result | Venue | Date |
|---|
| 400m | 54.06 | Nairobi (KEN) | 24.06.2010 | | 800m | 1:56.04 | Yanmar Stadium Nagai, Osaka (JPN) | 28.08.2007 | | 800m ind. | 2:12.04 | Moskva (RUS) | 07.02.2010 | | 1000m | 2:37.98 | Rovereto (ITA) | 28.08.2002 | | 1500m | 4:02.32 | Boudewijnstadion, Bruxelles (BEL) | 16.09.2011 | | Mile | 4:28.72 | Rieti (ITA) | 07.09.2008 | | 4x400m | 3:32.26 | Le Grand Stade, Marrakesh (MAR) | 14.08.2014 | | 4x800m | 8:04.28 | T. Robinson Stadium, Nassau (BAH) | 25.05.2014 |
| Season's BestsNo season's bests available. |
World RankingsNot ranked currently. | | Year | Result | Venue | Date |
|---|
| 2010 | 54.06 | Nairobi (KEN) | 24.06.2010 | | 2023 | 57.98 | Nyayo National Stadium, Nairobi (KEN) | 28.04.2023 |
| Year | Result | Venue | Date |
|---|
| 1999 | 2:11.98 | Zdzisław Krzyszkowiak Stadium, Bydgoszcz (POL) | 16.07.1999 | | 2001 | 2:04.59 | Nairobi (KEN) | 22.06.2001 | | 2002 | 2:00.80 | National Stadium, Kingston (JAM) | 19.07.2002 | | 2003 | 2:03.05 | Zürich (SUI) | 15.08.2003 | | 2004 | 2:00.52 | Rieti (ITA) | 05.09.2004 | | 2005 | 1:57.82 | Rovereto (ITA) | 31.08.2005 | | 2006 | 1:56.66 | Stade Olympique de la Pontaise, Lausanne (SUI) | 11.07.2006 | | 2007 | 1:56.04 | Yanmar Stadium Nagai, Osaka (JPN) | 28.08.2007 | | 2008 | 1:56.07 | National Stadium, Beijing (CHN) | 18.08.2008 | | 2009 | 1:57.90 | Olympiastadion, Berlin (GER) | 19.08.2009 | | 2010 | 1:57.84 | Hayward Field, Eugene, OR (USA) | 03.07.2010 | | 2011 | 1:57.42 | DS, Daegu (KOR) | 04.09.2011 | | 2012 | 1:57.79 | FBK Stadium, Hengelo (NED) | 27.05.2012 | | 2013 | 1:58.71 | Hayward Field, Eugene, OR (USA) | 01.06.2013 | | 2014 | 1:58.70 | Stade Louis II, Monaco (MON) | 18.07.2014 | | 2015 | 1:59.37 | Icahn Stadium, New York, NY (USA) | 13.06.2015 | | 2019 | 2:11.0h | Nyayo National Stadium, Nairobi (KEN) | 20.08.2019 |
| Year | Result | Venue | Date |
|---|
| 2002 | 2:37.98 | Rovereto (ITA) | 28.08.2002 |
| Year | Result | Venue | Date |
|---|
| 2004 | 4:11.91 | Rovereto (ITA) | 08.09.2004 | | 2005 | 4:15.77 | AC Gianni Brera, Milano (ITA) | 01.06.2005 | | 2006 | 4:15.43 | Doha (QAT) | 12.05.2006 | | 2007 | 4:14.70 | Doha (QAT) | 11.05.2007 | | 2009 | 4:13.87 | Doha (QAT) | 08.05.2009 | | 2010 | 4:04.17 | Letzigrund, Zürich (SUI) | 19.08.2010 | | 2011 | 4:02.32 | Boudewijnstadion, Bruxelles (BEL) | 16.09.2011 | | 2012 | 4:07.34 | Shanghai Stadium, Shanghai (CHN) | 19.05.2012 | | 2013 | 4:12.61 | Suhaim bin Hamad Stadium, Doha (QAT) | 10.05.2013 | | 2015 | 4:24.0h | Nakuru (KEN) | 18.04.2015 |
| Year | Result | Venue | Date |
|---|
| 2008 | 4:28.72 | Rieti (ITA) | 07.09.2008 |
No progression. No progression. | Year | Result | Venue | Date |
|---|
| 2010 | 3:35.12 | Nyayo National Stadium, Nairobi (KEN) | 01.08.2010 | | 2014 | 3:32.26 | Le Grand Stade, Marrakesh (MAR) | 14.08.2014 |
| Year | Result | Venue | Date |
|---|
| 2013 | 8:07.58 | Philadelphia, PA (USA) | 27.04.2013 | | 2014 | 8:04.28 | T. Robinson Stadium, Nassau (BAH) | 25.05.2014 |
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