MK
Masayo Kobayashi

Masayo Kobayashi

JPNJPNWomen
Birth dateFeb 4, 1980
Height-
Weight-

Masayo Kobayashi is a Japan long-distance runner, born on February 4, 1980. She competes primarily in the 3000m, 5000m and 10000m.

Her personal bests include 9:23.7h in the 3000m, 15:45.05 in the 5000m, 32:59.63 in the 10000m, 1:10:14 in the Semi and 2:33:00 in the Marathon. She is currently active on the international athletics circuit, representing Japan.

Key facts
Half Marathon
1:10:14
#938 all-time
Marathon
2:33:00
2008 season best
9:28.57
Jun 1, 2008 · Yokohama (JPN)
2008 season best
Age
46 years old

As of Sep 19, 2026: Half Marathon 1:10:14 (#938 all-time), Marathon 2:33:00, 2008 season best 9:28.57 (Jun 1, 2008, Yokohama (JPN)) · 46 years old

Performance Charts

Season bests

SeasonDisciplineResultWindDateTrendCompetitions
2008
3000m
9:28.57-Jun 1, 2008
↓
Yokohama (JPN)
2008
5000m
16:04.66-Sep 28, 2008
↓
Yokohama (JPN)
2008
10Kilometr
34:09-Dec 23, 2008
↑
Okayama (JPN)
2007
5000m
16:37.17-Apr 30, 2007
↓
Yokohama (JPN)
2007
Semi
1:15:38-Jul 8, 2007
↓
Sapporo (JPN)
2007
Marathon
2:33:00-Sep 9, 2007
↑
Sapporo (JPN)
2006
Semi
1:12:19-Feb 5, 2006
↓
Marugame (JPN)
2005
3000m
9:34.84-Jun 25, 2005
↓
Shibetsu (JPN)
2005
5000m
16:29.40-Sep 25, 2005
↓
Marugame (JPN)
2005
Semi
1:12:15-Feb 6, 2005
↓
Marugame (JPN)
2004
5000m
16:03.58-Oct 16, 2004
↓
Kobe (JPN)
2004
10000m
34:19.48-Sep 25, 2004
↓
Niigata (JPN)
2004
Semi
1:11:44-Feb 1, 2004
↓
Marugame (JPN)
2004
30Kilometr
1:50:47-Feb 15, 2004-Tokyo (JPN)
2004
Marathon
2:39:06-Aug 29, 2004
↑
Sapporo (JPN)
2003
5000m
16:03.34-Sep 27, 2003
↓
Okayama (JPN)
2003
10000m
32:59.63-Sep 27, 2003
↓
Okayama (JPN)
2003
Semi
1:10:14-Feb 2, 2003
↓
Marugame (JPN)
2002
3000m
9:23.7h-May 18, 2002
↓
Kumamoto (JPN)
2002
5000m
15:59.72-May 25, 2002
↓
Nobeoka (JPN)
2002
10000m
34:11.17-Apr 28, 2002
↓
Kobe (JPN)
2002
Semi
1:12:09-Mar 10, 2002
↓
Yamaguchi (JPN)
2001
5000m
15:55.41-Oct 14, 2001
↓
Kobe (JPN)
2001
10000m
33:23.75-Apr 22, 2001
↓
Kobe (JPN)
2001
Semi
1:11:54-Dec 16, 2001
↓
Kobe (JPN)
2000
5000m
15:45.79-Oct 15, 2000
↓
Kobe (JPN)
2000
10Kilometr
33:05-Dec 17, 2000
↑
Kobe (JPN)
2000
Semi
1:13:56-Jul 2, 2000
↓
Sapporo (JPN)
1999
5000m
15:45.05-Oct 17, 1999
↓
Kobe (JPN)
1999
10Kilometr
34:34-Sep 12, 1999
↑
Tottori (JPN)

2008

5 performances
DisciplineResultWindDateCompetitions
10Kilometr
34:09-Dec 23Okayama
5000m
16:04.66-Sep 28Yokohama
5000m
16:35.02-Jul 13Kitakami Hokuren Distance Challenge, Kitakami
5000m
16:32.75-Jul 9Abashiri Hokuren Distance Challenge, Abashiri
3000m
9:28.57-Jun 1Yokohama

2007

4 performances
DisciplineResultWindDateCompetitions
Marathon
2:33:00-Sep 9Sapporo Hokkaido Marathon, Sapporo
Semi
1:15:38-Jul 8Sapporo Half Marathon, Sapporo
5000m
17:21.86-Jun 10Abashiri Hokuren Distance Challenge, Abashiri
5000m
16:37.17-Apr 30Yokohama

2006

1 performance
DisciplineResultWindDateCompetitions
Semi
1:12:19-Feb 5Marugame Half Marathon, Marugame

2005

6 performances
DisciplineResultWindDateCompetitions
5000m
16:29.40-Sep 25Marugame Japanese Corporate Ch., Marugame
5000m
16:35.99-Jul 6Sapporo Hokuren Distance Challenge, Sapporo
3000m
9:36.02-Jun 29Fukagawa Hokuren Distance Challenge, Fukagawa
3000m
9:34.84-Jun 25Shibetsu Hokuren Distance Challenge, Shibetsu
Semi
1:12:15-Feb 6Marugame Half Marathon, Marugame
Semi
1:13:21-Jan 6Miyazaki Half Marathon, Miyazaki

2004

8 performances
DisciplineResultWindDateCompetitions
Semi
1:13:22-Dec 23Okayama Sanyo Women's Half Marathon, Okayama
5000m
16:03.58-Oct 16Kobe Meeting, Kobe
10000m
34:19.48-Sep 25Niigata Japanese Corporate Team Championships, Niigata
Marathon
2:39:06-Aug 29Sapporo Hokkaido Marathon, Sapporo
Semi
1:14:15-Mar 14Kyoto City Half Marathon, Kyoto
30Kilometr
1:50:47-Feb 15Ohme-Hochi Road Race, Tokyo
Semi
1:11:44-Feb 1Marugame Half Marathon, Marugame
Semi
1:12:32-Jan 6Miyazaki Half Marathon, Miyazaki

2003

6 performances
DisciplineResultWindDateCompetitions
Semi
1:13:09-Nov 9Kobe Half Marathon, Kobe
5000m
16:03.34-Sep 27Okayama Japanese Corporate Ch., Okayama
10000m
32:59.63-Sep 27Okayama Japanese Corporate Ch., Okayama
5000m
16:36.80-May 24Nobeoka Golden Games, Nobeoka
5000m
16:54.84-Apr 29Hiroshima Mikio Oda Memorial, Hiroshima
Semi
1:10:14-Feb 2Marugame Half Marathon, Marugame

2002

6 performances
DisciplineResultWindDateCompetitions
Semi
1:13:30-Jul 7Brisbane Gold Coast Half Marathon, Brisbane
5000m
15:59.72-May 25Nobeoka
3000m
9:23.7HT-May 18Kumamoto
5000m
16:12.75-May 11Nobeoka
10000m
34:11.17-Apr 28Kobe Hyogo Meeting, Kobe
Semi
1:12:09-Mar 10Yamaguchi Half Marathon, Yamaguchi

2001

6 performances
DisciplineResultWindDateCompetitions
Semi
1:11:54-Dec 16Kobe Half Marathon, Kobe
5000m
15:55.41-Oct 14Kobe
5000m
16:30.12-May 3Shizuoka GP, Shizuoka
5000m
16:19.33-Apr 29Hiroshima Mikio Oda Memorial, Hiroshima
10000m
33:23.75-Apr 22Kobe Hyogo Relays, Kobe
5000m
16:14.90-Apr 8Kumamoto

2000

4 performances
DisciplineResultWindDateCompetitions
10Kilometr
33:05-Dec 17Kobe 10 km, Kobe
5000m
15:45.79-Oct 15Kobe
5000m
15:52.91-Jul 16Sapporo
Semi
1:13:56-Jul 2Sapporo Half Marathon, Sapporo

1999

4 performances
DisciplineResultWindDateCompetitions
5000m
15:45.05-Oct 17Kobe
5000m
16:05.25-Oct 2Shizuoka Japanese Championships, Shizuoka
10Kilometr
34:34-Sep 12Tottori 10 km, Tottori
5000m
15:57.23-Aug 22Shimonoseki
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Honours

No medals

FAQ

Frequently asked questions

What is Masayo Kobayashi's Half Marathon personal best?

Masayo Kobayashi's Half Marathon personal best is 1:10:14, set on Feb 2, 2003 in Marugame (JPN), #938 on the all-time list.

Which events does Masayo Kobayashi compete in?

Masayo Kobayashi competes in the Half Marathon and Marathon.

How did Masayo Kobayashi perform in 2008?

2008 season best: 9:28.57, set on Jun 1, 2008 in Yokohama (JPN).