Federation · IRL
Ireland national best marks
Best marks by Ireland athletes in each event, compiled from the all-time lists we import. Derived national bests — not official national records (see note below).
9
Stored marks
8
Distinct marks shown
Men's 400m
Derived 14 Sep 2026
| # | Athlete | Mark | Date | Venue | Age |
|---|---|---|---|---|---|
| 1 | David Gillick | 44.77 | 4 Jul 2009 | — | — |
| 2 | David Gillick | 44.79 | 28 Jul 2010 | — | — |
| 3 | David Gillick | 44.82 | 10 Jul 2009 | — | — |
| 4 | David Gillick | 44.88 | 19 Aug 2009 | — | — |
| 5 | David Gillick | 44.95 | 9 Jul 2010 | — | — |
| 6 | David Gillick | 44.98 | 4 Jul 2010 | — | — |
| 6= | Jack Rafferty | 44.98 | 29 Jun 2025 | — | — |
| 8 | David Gillick | 45.12 | 27 Jun 2008 | — | — |
| 9 | David Gillick | 45.16 | 10 Jun 2009 | — | — |
Every mark in scope within the compiled depth. Equal marks share a rank ("1=" style). An athlete with marks for two nations appears under each nation represented at the time (e.g. Obikwelu under Nigeria and Portugal).
About this derivation
These lists are derived from the marks in our database — including the complete legal all-time lists imported from alltime-athletics.com — grouped by the nation the athlete was representing at each mark. They are not official national records: federations ratify national records under their own eligibility rules, and some marks here may not qualify.