Justin Mahieu

Justin Mahieu

BelgiumBelgiumActive
Born
Aug 12, 1985 (41 years old)
Events
Marathon · 10 Kilometres Road

Justin Mahieu is a Belgium middle-distance runner, born on August 12, 1985. He competes primarily in the 800m, 1500m and 3000m.

His personal bests include 1:56.20 in the 800m, 3:55.00 in the 1500m, 8:17.74 in the 3000m, 14:31.15 in the 5000m and 1:04:44 in the Semi. He is currently active on the international athletics circuit, representing Belgium.

Personal best · Marathon2:13:39
2026 season best2:24:53Sep 27, 2026
2026 season best
Personal best · 10 Kilometres Road29:24
Last competition48th Warsaw MarathonSep 27, 2026 · 2:24:53
48th Warsaw Marathon

As of Nov 6, 2026: Marathon 2:13:39, 10 Kilometres Road 29:24, 2026 season best 2:24:53 (Sep 27, 2026) · Last competition: 48th Warsaw Marathon, Sep 27, 2026, 2:24:53 · 41 years old

Personal bests

WA points calculator →
DisciplineResultAll-time2026
800mNivelles 2009Belgium 800 m all-time list1:56.20857 pts––
1500mOordegem 2011Belgium 1500 m all-time list3:55.00915 pts––
3000mDampicourt 2025Belgium 3000 m all-time list8:17.74955 pts––
5000mKoblenz 2014Belgium 5000 m all-time list14:31.15899 pts––
SemiDen Haag 2020Belgium Half Marathon all-time list1:04:441,004 pts––
MarathonValencia 2022Belgium Marathon all-time list2:13:391,065 pts––

Progression

Compare me
SeasonDisciplineResultWindDateCompetitions
20263000Metres Indoor8:33.22–Jan 24, 2026Allianz Championnats LBFA indoor TC - Juniors (+VAL marche TC)
20263000Metres 8:33.22–Jan 24, 2026Allianz Championnats LBFA indoor TC - Juniors (+VAL marche TC)
20263000m-short-track 8:33.22–Jan 24, 2026Allianz Championnats LBFA indoor TC - Juniors (+VAL marche TC)
20263000m Indoor8:33.22–Jan 24, 2026Allianz Championnats LBFA indoor TC - Juniors (+VAL marche TC)
202610Kilometr 29:24–Jan 11, 202610K Valencia Ibercaja by Kiprun
2026Semi 1:11:18–Feb 1, 2026TotalEnergies Media Maratón Murcia Costa Cálida, Murcia
2026Marathon 2:24:53–Sep 27, 202648th Warsaw Marathon
20253000m 8:17.74–Jul 5, 2025Dampicourt Speed Night
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FAQ

Frequently asked questions

Justin Mahieu's Marathon personal best is 2:13:39, set on Dec 4, 2022 in Valencia (ESP).

Justin Mahieu competes in the Marathon and 10 Kilometres Road.

2026 season best: 2:24:53, set on Sep 27, 2026. Last competition: 48th Warsaw Marathon on Sep 27, 2026, 2:24:53.