Personal Bests| Event | Result | Venue | Date |
|---|
| 800m | 1:52.75 | Auburn, AL (USA) | 01.04.2000 | | 800m ind. | 1:51.25 | Blacksburg, VA (USA) | 19.01.2002 | | 1500m | 3:35.83 | Rieti (ITA) | 27.08.2006 | | Mile | 3:55.71 | New York, NY (USA) | 03.06.2006 | | Mile ind. | 4:04.46 | Blacksburg, VA (USA) | 13.01.2001 | | 3000m | 7:41.27 | Carson, CA (USA) | 20.05.2007 | | 3000m ind. | 7:48.08 | Boston, MA (USA) | 27.01.2002 | | 5000m | 13:11.93 | Walnut, CA (USA) | 13.04.2007 | | 5000m ind. | 14:24.78 | Indianapolis, IN (USA) | 07.02.1999 | | 10,000m | 27:37.74 | Palo Alto, CA (USA) | 30.04.2006 | | 3000mSC | 8:17.34 | National Stadium, Beijing (CHN) | 16.08.2008 | | 5 km Road | 13:28 | Carlsbad, CA (USA) | 05.04.2009 | | 10 km Road | 28:40 | New York, NY (USA) | 20.05.2006 | | 15 km Road | 43:36 | Jacksonville, FL (USA) | 14.03.2009 | | 10 Miles Road | 48:09 | St. Paul (USA) | 04.10.2009 | | Half Marathon | 1:03:18 | New York, NY (USA) | 21.03.2010 |
| Season's BestsNo season's bests available. |
World RankingsNot ranked currently. | | Year | Result | Venue | Date |
|---|
| 2000 | 1:52.75 | Auburn, AL (USA) | 01.04.2000 |
| Year | Result | Venue | Date |
|---|
| 1999 | 3:45.92 | Atlanta, GA (USA) | 21.05.1999 | | 2000 | 3:46.89 | Knoxville, TN (USA) | 14.04.2000 | | 2001 | 3:40.79 | Atlanta, GA (USA) | 18.05.2001 | | 2003 | 3:44.44 | Tucson, AZ (USA) | 24.05.2003 | | 2004 | 3:37.98 | Heusden-Zolder (BEL) | 31.07.2004 | | 2006 | 3:35.83 | Rieti (ITA) | 27.08.2006 | | 2009 | 3:42.77 | Knoxville, TN (USA) | 10.04.2009 | | 2013 | 3:48.94 | Raleigh, NC (USA) | 10.05.2013 |
| Year | Result | Venue | Date |
|---|
| 2001 | 4:00.74 | Knoxville, TN (USA) | 06.04.2001 | | 2005 | 3:58.23 | Nashville, TN (USA) | 04.06.2005 | | 2006 | 3:55.71 | New York, NY (USA) | 03.06.2006 | | 2007 | 4:02.25 | Ithaca, NY (USA) | 13.05.2007 | | 2010 | 4:03.85 | Nashville, TN (USA) | 05.06.2010 | | 2019 | 4:14.78 | Chicago, IL (USA) | 31.05.2019 |
| Year | Result | Venue | Date |
|---|
| 1999 | 8:19.17 | Knoxville, TN (USA) | 30.04.1999 | | 2004 | 7:50.70 | Gresham, OR (USA) | 05.06.2004 | | 2007 | 7:41.27 | Carson, CA (USA) | 20.05.2007 |
| Year | Result | Venue | Date |
|---|
| 1999 | 14:25.05 | Athens, GA (USA) | 16.05.1999 | | 2000 | 14:02.67 | Baton Rouge, LA (USA) | 14.05.2000 | | 2001 | 13:47.64 | Philadelphia, PA (USA) | 27.04.2001 | | 2002 | 13:34.30 | Palo Alto, CA (USA) | 03.05.2002 | | 2004 | 13:38.29 | Walnut, CA (USA) | 17.04.2004 | | 2006 | 13:24.47 | Stadio Quercia, Rovereto (ITA) | 30.08.2006 | | 2007 | 13:11.93 | Walnut, CA (USA) | 13.04.2007 | | 2009 | 13:17.98 | Walnut, CA (USA) | 17.04.2009 | | 2010 | 13:40.73 | Knoxville, TN (USA) | 09.04.2010 | | 2012 | 14:08.31 | Charlotte, NC (USA) | 16.03.2012 |
| Year | Result | Venue | Date |
|---|
| 2006 | 27:37.74 | Palo Alto, CA (USA) | 30.04.2006 | | 2009 | 27:39.68 | Berkeley, CA (USA) | 24.04.2009 |
| Year | Result | Venue | Date |
|---|
| 1998 | 8:52.12 | Knoxville, TN (USA) | 10.04.1998 | | 1999 | 8:42.58 | Eugene, OR (USA) | 25.06.1999 | | 2000 | 8:25.37 | Sacramento, CA (USA) | 20.07.2000 | | 2001 | 8:21.00 | Stockholm (SWE) | 17.07.2001 | | 2002 | 8:19.07 | Palo Alto, CA (USA) | 23.06.2002 | | 2003 | 8:31.03 | Palo Alto, CA (USA) | 19.06.2003 | | 2004 | 8:17.91 | Sacramento, CA (USA) | 15.07.2004 | | 2005 | 8:19.46 | Rieti (ITA) | 28.08.2005 | | 2006 | 8:19.77 | Linz (AUT) | 22.08.2006 | | 2007 | 8:27.64 | Indianapolis, IN (USA) | 24.06.2007 | | 2008 | 8:17.34 | National Stadium, Beijing (CHN) | 16.08.2008 | | 2010 | 8:30.84 | Icahn Stadium, New York, NY (USA) | 12.06.2010 | | 2012 | 8:37.38 | Murfreesboro, TN (USA) | 02.06.2012 | | 2016 | 8:56.62 | Nashville, TN (USA) | 04.06.2016 |
No progression. | Year | Result | Venue | Date |
|---|
| 2005 | 13:48 | Providence, RI (USA) | 11.09.2005 | | 2006 | 13:51 | Providence, RI (USA) | 17.09.2006 | | 2008 | 13:41 | Providence, RI (USA) | 21.09.2008 | | 2009 | 13:28 | Carlsbad, CA (USA) | 05.04.2009 | | 2011 | 14:05 | Providence, RI (USA) | 18.09.2011 | | 2012 | 13:40 | Charlotte, NC (USA) | 20.10.2012 | | 2014 | 13:59 | Charlotte, NC (USA) | 18.10.2014 |
| Year | Result | Venue | Date |
|---|
| 2005 | 29:18 | Northporth (USA) | 17.09.2005 | | 2006 | 28:40 | New York, NY (USA) | 20.05.2006 | | 2007 | 29:17 | New York, NY (USA) | 09.12.2007 | | 2009 | 29:07 | New York, NY (USA) | 16.05.2009 |
| Year | Result | Venue | Date |
|---|
| 2005 | 44:23 | Jacksonville, FL (USA) | 12.03.2005 | | 2009 | 43:36 | Jacksonville, FL (USA) | 14.03.2009 | | 2011 | 45:49 | Jacksonville, FL (USA) | 12.03.2011 |
| Year | Result | Venue | Date |
|---|
| 2006 | 50:13 | Louisville, KY (USA) | 15.04.2006 | | 2009 | 48:09 | St. Paul (USA) | 04.10.2009 |
| Year | Result | Venue | Date |
|---|
| 2010 | 1:03:18 | New York, NY (USA) | 21.03.2010 | | 2013 | 1:08:10 | Naples, FL (USA) | 20.01.2013 |
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