Check his consistency over a decade. Impressive. He's also quite the stud at Half Marathon, running 58-59:xx from 2014-2019... Marathon (2:05-2:07) not too shabby either for this Japanese-system trained Kenyan. I think one could argue he is a very clean athlete -
Outdoor
10,000 Metres
Performance Place Date
2020 27:02.80 Prefectural Stadium, Kumagaya (JPN) 19 SEP 2020
2017 26:52.12 Olympic Stadium, London (GBR) 04 AUG 2017
2016 27:07.30 Yokohama (JPN) 12 NOV 2016
2015 27:04.77 National Stadium, Beijing (CHN) 22 AUG 2015
2014 26:52.36 Hayward Field, Eugene, OR (USA) 30 MAY 2014
2013 27:13.12 Hayward Field, Eugene, OR (USA) 31 MAY 2013
2012 27:05.50 Hayward Field, Eugene, OR (USA) 01 JUN 2012
2011 27:13.67 Palo Alto, CA (USA) 01 MAY 2011
2010 27:23.62 Kumagaya (JPN) 15 MAY 2010
Half Marathon
Performance Place Date
2019 59:05 Buenos Aires (ARG) 25 AUG 2019
2018 58:42 Ras Al Khaimah (UAE) 09 FEB 2018
2017 59:10 Ras Al Khaimah (UAE) 10 FEB 2017
2016 59:32 København (DEN) 18 SEP 2016
2015 59:14 København (DEN) 13 SEP 2015
2014 59:23 Philadelphia, PA (USA) 20 SEP 2014
Marathon
Performance Place Date
2020 2:06:15 Tokyo (JPN) 01 MAR 2020
2019 2:05:53 Chicago, IL (USA) 13 OCT 2019
2018 2:07:59 Chicago, IL (USA) 07 OCT 2018
2017 2:07:41 London (GBR) 23 APR 2017