Cosmas Mwangi Boi

Birth dateMar 12, 2003

Height-

Weight-

Cosmas Mwangi Boi is a Kenya long-distance runner, born on March 12, 2003. He competes primarily in the 3000m, 5000m and 10000m.

His personal bests include 7:54.83 in the 3000m, 13:17.83 in the 5000m, 27:15.58 in the 10000m, 59:27 in the Semi and 27:29 in the 10Kilometr. He is currently active on the international athletics circuit, representing Kenya.

Key facts

Half Marathon

59:27

#149 all-time

10 000 m

27:15.58

#184 all-time

2025 season best

59:27

Mar 2, 2025 · Roma (ITA)

2025 season best

Last competition

Mezza Maratona d’Italia Memorial Enzo Ferrari, Maranello

Mar 30, 2025 · 1:00:07

Mezza Maratona d’Italia Memorial Enzo Ferrari, Maranello

Age

23 years old

As of Sep 15, 2026: Half Marathon 59:27 (#149 all-time), 10 000 m 27:15.58 (#184 all-time), 2025 season best 59:27 (Mar 2, 2025, Roma (ITA)) · Last competition: Mezza Maratona d’Italia Memorial Enzo Ferrari, Maranello, Mar 30, 2025, 1:00:07 · 23 years old

Personal bests

7:54.83

13:17.83

27:15.58

59:27

27:29

Performance Charts

Season bests

Season	Discipline	Result	Wind	Date	Trend	Competitions
2025	Semi	59:27	-	Mar 2, 2025	↑	Eurospin RomaOstia Half Marathon
2024	5000m	13:18.32	-	Jul 20, 2024	↑	Hokuren Distance Challenge - Chitose, Aoba Park Athletic Field, Chitose
2024	10000m	27:43.74	-	Jun 1, 2024	↓	The 9th NITTAIDAI Challenge Games
2024	Semi	1:00:18	-	Oct 6, 2024	↑	Principality Cardiff Half Marathon
2023	5000m	13:23.27	-	May 4, 2023	↑	34th Golden Games
2023	10000m	27:24.83	-	Nov 25, 2023	↓	Hachioji Long Distance
2023	10Kilometr	27:29	-	Jan 29, 2023	-	10K Ibiza - Platja d'en Bossa
2023	Semi	59:29	-	Aug 27, 2023	↑	21K Buenos Aires Ñandú
2022	5000m	13:17.83	-	Jun 5, 2022	↑	NITTAIDAI Athletic Stadium, Yokohama (JPN)
2022	10000m	27:15.58	-	Nov 26, 2022	↓	Gion Stadium, Machida (JPN)
2021	3000m	7:54.83	-	Apr 17, 2021	-	Edion Stadium, Hiroshima (JPN)
2021	5000m	13:22.01	-	Oct 2, 2021	↑	Municipal Stadium, Miyoshi (JPN)

Discipline	Result	Wind	Date	Competitions
Semi	1:00:07	-	Mar 30	Mezza Maratona d’Italia Memorial Enzo Ferrari, Maranello
Semi	59:27	-	Mar 2	Eurospin RomaOstia Half Marathon

Discipline	Result	Wind	Date	Competitions
5000m	DNF	-	Dec 7	Edion Distance Challenge 2024
10000m	DNF	-	Nov 23	2024 Hachioji Long Distance
Semi	1:00:18	-	Oct 6	Principality Cardiff Half Marathon
Semi	1:00:25	-	Aug 25	21k Buenos Aires
5000m	13:18.32	-	Jul 20	Hokuren Distance Challenge - Chitose, Aoba Park Athletic Field, Chitose
10000m	DNF	-	Jul 13	Hokuren Distance Challenge - Shibetsu, Athletics Stadium, Shibetsu
10000m	27:43.74	-	Jun 1	The 9th NITTAIDAI Challenge Games
5000m	13:30.42	-	Jun 1	The 9th NITTAIDAI Challenge Games
10000m	28:10.82	-	May 11	63rd Chugoku Corporate Athletics Championship
5000m	13:35.88	-	May 4	35th Golden Games in Nobeoka
5000m	13:26.93	-	Apr 29	58th Oda Mikio Memorial
Semi	1:00:33	-	Feb 24	Ras Al Khaimah Half Marathon

Discipline	Result	Wind	Date	Competitions
5000m	13:26.26	-	Dec 7	Edion Distance Challenge, Yanmar Stadium Nagai, Osaka
10000m	27:24.83	-	Nov 25	Hachioji Long Distance
5000m	13:34.30	-	Sep 30	3rd Chugoku Corporate Long Distance Challenge, Municipal Stadium, Miyoshi
5000m	13:27.94	-	Sep 24	71st All Japan Corporate Teams Athletics Championships
Semi	59:29	-	Aug 27	21K Buenos Aires Ñandú
10000m	28:35.5HT	-	Jul 8	Trials For World Athletics Championships Budapest 2023, Nyayo National Stadium, Nairobi
10000m	28:35.5HT	-	Jul 7	Trials For World Athletics Championships Budapest 2023, Nyayo National Stadium, Nairobi
10000m	27:27.88	-	Jun 11	3rd Nittaidai Challenge Games
10000m	28:18.26	-	May 21	62nd Chugoku Corporate Athletics Championship
10000m	28:18.26	-	May 13	62nd Chugoku Corporate Athletics Championship
5000m	13:23.27	-	May 4	34th Golden Games
10Kilometr	28:27	-	Apr 29	adizero Road to Records
Semi	59:40	-	Mar 19	Stramilano, Milano
10Kilometr	27:29	-	Jan 29	10K Ibiza - Platja d'en Bossa

Discipline	Result	Wind	Date	Competitions
10000m	27:15.58	-	Nov 26	Hachioji Long Distance Meeting, Gion Stadium, Machida
10000m	27:54.13	-	Sep 24	70th All Japan Corporate Team Championships, Nagaragawa Stadium, Gifu
5000m	14:01.62	-	Jul 1	Kenyan Trials For World Under 20 Championships, Nyayo National Stadium, Nairobi
5000m	13:17.83	-	Jun 5	296th Nippon Sport Science University Long Distance Competition, NITTAIDAI Athletic Stadium, Yokohama
5000m	13:33.41	-	Apr 29	Mikio Oda Memorial Athletics Meet, Municipal Stadium, Hiroshima
5000m	13:35.68	-	Apr 9	30th Kanakuri Memorial Distance, Egao Kenko Stadium, Kumamoto
10000m	29:27.02	-	Feb 4	1st Weekend Meeting, Nyayo National Stadium, Nairobi

Discipline	Result	Wind	Date	Competitions
5000m	13:22.01	-	Oct 2	3rd Long Distance Meeting, Municipal Stadium, Miyoshi
5000m	13:34.63	-	Jul 31	Japan High School Championships, Prefectural Stadium, Fukui
5000m	14:02.50	-	Jul 30	Japan High School Championships, Prefectural Stadium, Fukui
5000m	13:31.88	-	Jun 19	74th Chugoku High School vs. School Championships, Ishin Me-Life Stadium, Yamaguchi
5000m	13:22.80	-	Apr 29	Mikio Oda Memorial Athletics Meet
3000m	7:54.83	-	Apr 17	Hiroshima National Sports Festival, Edion Stadium, Hiroshima

FAQ

Frequently asked questions

What is Cosmas Mwangi Boi's Half Marathon personal best?

Cosmas Mwangi Boi's Half Marathon personal best is 59:27, set on Mar 2, 2025 in Roma (ITA), #149 on the all-time list.

Which events does Cosmas Mwangi Boi compete in?

Cosmas Mwangi Boi competes in the Half Marathon and 10 000 m.

How did Cosmas Mwangi Boi perform in 2025?

2025 season best: 59:27, set on Mar 2, 2025 in Roma (ITA). Last competition: Mezza Maratona d’Italia Memorial Enzo Ferrari, Maranello on Mar 30, 2025, 1:00:07.

Cosmas Mwangi Boi

Personal bests

Performance Charts

Season bests

2025

2024

2023

2022

2021

Honours

No medals

Frequently asked questions