Personal Bests| Event | Result | Venue | Date |
|---|
| 1500m | 3:36.18 | Carson, CA (USA) | 20.05.2007 | | Mile ind. | 3:55.04 | Fayetteville, AR (USA) | 21.01.2006 | | 3000m | 7:32.49 | Stade Louis II, Monaco (MON) | 25.07.2007 | | 3000m ind. | 7:38.59 | Fayetteville, AR (USA) | 14.02.2004 | | 2 Miles | 8:23.75 | Carson, CA (USA) | 21.05.2006 | | 2 Miles ind. | 8:27.39 | Boston, MA (USA) | 28.01.2006 | | 5000m | 13:03.53 | Boudewijnstadion, Bruxelles (BEL) | 16.09.2011 | | 5000m ind. | 13:28.93 | Fayetteville, AR (USA) | 14.03.2003 | | 10,000m | 27:39.55 | Palo Alto, CA (USA) | 29.04.2007 | | 5 km Road | 13:26 | Carlsbad, CA (USA) | 01.04.2012 | | 10 km Road | 28:33 | New York, NY (USA) | 15.05.2010 | | 10 Miles Road | 47:14 | Portsmouth (GBR) | 30.10.2011 | | Half Marathon | 1:01:58 | New York, NY (USA) | 21.03.2010 |
| Season's BestsNo season's bests available. |
World RankingsNot ranked currently. | | Year | Result | Venue | Date |
|---|
| 2010 | 1:53.01 | Walnut, CA (USA) | 06.06.2010 |
| Year | Result | Venue | Date |
|---|
| 1998 | 3:53.48 | Dallas, TX (USA) | 21.03.1998 | | 1999 | 3:46.72 | Port Elizabeth (RSA) | 22.02.1999 | | 2000 | 3:51.99 | College Station, TX (USA) | 11.05.2000 | | 2002 | 3:42.10 | Fayetteville, AR (USA) | 13.04.2002 | | 2003 | 3:39.24 | Fayetteville, AR (USA) | 12.04.2003 | | 2004 | 3:40.18 | Oxford (GBR) | 15.05.2004 | | 2006 | 3:40.71 | Cork (IRL) | 01.07.2006 | | 2007 | 3:36.18 | Carson, CA (USA) | 20.05.2007 | | 2008 | 3:39.12 | Cork City (IRL) | 12.07.2008 | | 2009 | 3:38.44 | Bislett Stadion, Oslo (NOR) | 03.07.2009 | | 2010 | 3:39.43 | Icahn Stadium, New York, NY (USA) | 12.06.2010 | | 2012 | 3:42.00 | Palo Alto, CA (USA) | 06.04.2012 |
| Year | Result | Venue | Date |
|---|
| 1998 | 8:20.48 | Pretoria (RSA) | 02.04.1998 | | 1999 | 8:17.07 | Bloemfontein (RSA) | 23.01.1999 | | 2004 | 7:38.96 | Boudewijnstadion, Bruxelles (BEL) | 03.09.2004 | | 2007 | 7:32.49 | Stade Louis II, Monaco (MON) | 25.07.2007 | | 2008 | 7:38.21 | Stade de France, Paris-St-Denis (FRA) | 18.07.2008 | | 2009 | 7:37.84 | Eugene, OR (USA) | 07.06.2009 | | 2010 | 7:44.25 | Liège (BEL) | 13.07.2010 | | 2011 | 7:46.29 | Crystal Palace, London (GBR) | 05.08.2011 |
| Year | Result | Venue | Date |
|---|
| 2006 | 8:23.75 | Carson, CA (USA) | 21.05.2006 | | 2007 | 8:31.08 | Crystal Palace, London (GBR) | 03.08.2007 |
| Year | Result | Venue | Date |
|---|
| 2000 | 13:49.25 | Palo Alto, CA (USA) | 25.03.2000 | | 2002 | 13:22.07 | Walnut, CA (USA) | 19.04.2002 | | 2003 | 13:25.59 | Walnut, CA (USA) | 17.04.2003 | | 2004 | 13:12.74 | Crystal Palace, London (GBR) | 30.07.2004 | | 2006 | 13:08.97 | New York, NY (USA) | 03.06.2006 | | 2007 | 13:07.10 | Brasschaat (BEL) | 21.07.2007 | | 2008 | 13:16.12 | Ostrava (CZE) | 12.06.2008 | | 2009 | 13:16.83 | Carson, CA (USA) | 16.05.2009 | | 2010 | 13:21.66 | International Stadium, Gateshead (GBR) | 10.07.2010 | | 2011 | 13:03.53 | Boudewijnstadion, Bruxelles (BEL) | 16.09.2011 | | 2012 | 13:32.76 | Palo Alto, CA (USA) | 06.04.2012 |
| Year | Result | Venue | Date |
|---|
| 2002 | 29:33.77 | Starkville, MS (USA) | 10.05.2002 | | 2003 | 28:20.29 | Sacramento, CA (USA) | 12.06.2003 | | 2004 | 28:46.64 | Oxford (GBR) | 14.05.2004 | | 2007 | 27:39.55 | Palo Alto, CA (USA) | 29.04.2007 |
No progression. | Year | Result | Venue | Date |
|---|
| 2009 | 13:36 | Carlsbad, CA (USA) | 05.04.2009 | | 2010 | 13:44 | Carlsbad, CA (USA) | 11.04.2010 | | 2012 | 13:26 | Carlsbad, CA (USA) | 01.04.2012 | | 2013 | 13:54 | Providence, RI (USA) | 22.09.2013 |
| Year | Result | Venue | Date |
|---|
| 2010 | 28:33 | New York, NY (USA) | 15.05.2010 | | 2013 | 29:20 | Holyoke, MA (USA) | 16.03.2013 |
| Year | Result | Venue | Date |
|---|
| 2011 | 47:14 | Portsmouth (GBR) | 30.10.2011 | | 2012 | 48:25 | Portsmouth (GBR) | 28.10.2012 |
| Year | Result | Venue | Date |
|---|
| 2010 | 1:01:58 | New York, NY (USA) | 21.03.2010 | | 2011 | 1:03:22 | Tempe, AZ (USA) | 16.01.2011 | | 2012 | 1:03:39 | Marugame (JPN) | 05.02.2012 | | 2013 | 1:03:14 | Marugame (JPN) | 03.02.2013 |
| Year | Result | Venue | Date |
|---|
| 2013 | 2:23:05 | Fukuoka (JPN) | 01.12.2013 |
No progression. No progression. No progression. |
