Personal Bests| Event | Result | Venue | Date |
|---|
| 5000m | 14:55.0h | Nairobi (KEN) | 23.05.2008 | | 10,000m | 31:24.20 | Palo Alto, CA (USA) | 01.05.2011 | | 3000mSC | 10:07.4h | Nairobi (KEN) | 22.05.2009 | | 5 km Road | 15:23 | Boston, MA (USA) | 14.04.2013 | | 10 km Road | 31:54 | Cape Elizabeth, ME (USA) | 04.08.2012 | | 12 km Road | 38:07 | San Francisco, CA (USA) | 16.05.2010 | | 15 km Road | 50:23 | Utica, NY (USA) | 09.07.2017 | | 10 Miles Road | 51:51 | Washington, DC (USA) | 11.04.2010 | | Half Marathon | 1:07:47 | Philadelphia, PA (USA) | 19.09.2010 | | Marathon | 2:34:57 | Enschede (NED) | 22.04.2018 |
| Season's BestsNo season's bests available. |
World RankingsNot ranked currently. | | Year | Result | Venue | Date |
|---|
| 2008 | 14:55.1h | Nairobi (KEN) | 23.05.2008 | | 2009 | 15:58.1h | Nairobi (KEN) | 23.05.2009 | | 2010 | 16:37.2h | Nairobi (KEN) | 22.05.2010 | | 2011 | 15:15.15 | Hayward Field, Eugene, OR (USA) | 03.06.2011 | | 2014 | 16:52.1h | Nairobi (KEN) | 13.05.2014 | | 2016 | 16:26.6h | Nairobi (KEN) | 27.04.2016 |
| Year | Result | Venue | Date |
|---|
| 2008 | 35:35.1h | Nairobi (KEN) | 24.05.2008 | | 2009 | 31:31.92 | Birmingham (GBR) | 11.07.2009 | | 2010 | 32:29.99 | Nairobi (KEN) | 25.06.2010 | | 2011 | 31:24.20 | Palo Alto, CA (USA) | 01.05.2011 |
| Year | Result | Venue | Date |
|---|
| 2009 | 10:07.4h | Nairobi (KEN) | 22.05.2009 |
| Year | Result | Venue | Date |
|---|
| 2006 | 15:50 | Albany, NY (USA) | 03.06.2006 | | 2011 | 15:52 | Boston, MA (USA) | 17.04.2011 | | 2012 | 16:28 | Lisboa (POR) | 27.05.2012 | | 2013 | 15:23 | Boston, MA (USA) | 14.04.2013 | | 2014 | 15:35 | Boston, MA (USA) | 19.04.2014 | | 2015 | 15:58 | Boston, MA (USA) | 18.04.2015 | | 2016 | 16:00 | Boston, MA (USA) | 16.04.2016 |
| Year | Result | Venue | Date |
|---|
| 2006 | 32:39 | Ottawa (CAN) | 28.05.2006 | | 2008 | 32:08 | San Juan (PUR) | 24.02.2008 | | 2009 | 32:25 | New Orleans, LA (USA) | 11.04.2009 | | 2010 | 30:45 | New Orleans, LA (USA) | 03.04.2010 | | 2011 | 31:47 | New Orleans, LA (USA) | 23.04.2011 | | 2012 | 31:54 | Cape Elizabeth, ME (USA) | 04.08.2012 | | 2013 | 32:10 | San Juan (PUR) | 24.02.2013 | | 2014 | 32:56 | Eldoret (KEN) | 02.02.2014 | | 2015 | 32:46 | Ottawa (CAN) | 23.05.2015 | | 2016 | 32:11 | San Juan (PUR) | 28.02.2016 | | 2017 | 34:34 | New Orleans, LA (USA) | 15.04.2017 | | 2018 | 33:03 | Boston, MA (USA) | 24.06.2018 |
| Year | Result | Venue | Date |
|---|
| 2009 | 38:37 | Spokane, WA (USA) | 03.05.2009 | | 2010 | 38:07 | San Francisco, CA (USA) | 16.05.2010 | | 2014 | 39:38 | Spokane, WA (USA) | 04.05.2014 | | 2015 | 40:20 | Spokane, WA (USA) | 03.05.2015 | | 2016 | 40:22 | Spokane, WA (USA) | 01.05.2016 | | 2017 | 41:22 | Spokane, WA (USA) | 07.05.2017 |
| Year | Result | Venue | Date |
|---|
| 2012 | 55:00 | Utica, NY (USA) | 08.07.2012 | | 2013 | 50:33 | Utica, NY (USA) | 14.07.2013 | | 2016 | 52:18 | Utica, NY (USA) | 10.07.2016 | | 2017 | 50:23 | Utica, NY (USA) | 09.07.2017 |
| Year | Result | Venue | Date |
|---|
| 2006 | 54:01 | Flint, MI (USA) | 26.08.2006 | | 2008 | 54:21 | Washington, DC (USA) | 06.04.2008 | | 2009 | 53:32 | Washington, DC (USA) | 05.04.2009 | | 2010 | 51:51 | Washington, DC (USA) | 11.04.2010 | | 2013 | 55:52 | Washington, DC (USA) | 07.04.2013 | | 2016 | 55:27 | Washington, DC (USA) | 03.04.2016 | | 2017 | 56:32 | Flint, MI (USA) | 26.08.2017 |
| Year | Result | Venue | Date |
|---|
| 2006 | 1:10:09 | Philadelphia, PA (USA) | 17.09.2006 | | 2007 | 1:12:06 | Lagos (NGR) | 09.12.2007 | | 2010 | 1:07:47 | Philadelphia, PA (USA) | 19.09.2010 | | 2012 | 1:11:16 | Philadelphia, PA (USA) | 16.09.2012 | | 2013 | 1:12:01 | New Delhi (IND) | 15.12.2013 | | 2015 | 1:12:08 | Praha (CZE) | 28.03.2015 |
| Year | Result | Venue | Date |
|---|
| 2018 | 2:34:57 | Enschede (NED) | 22.04.2018 |
No progression. |
