IAU 48-hour world record
Covered 485.099 km in Pabianice, Poland, adding 11.604 km to the previous record.
Source-checked athlete record · Updated Aug 17, 2026
Matthieu Bonne
IAU 48-hour record holder and six-day world-best performer
Matthieu Bonne is a Belgian ultrarunner who holds the IAU 48-hour record at 485.099 km and the ratified six-day world-best performance at 1,045.519 km.
🇧🇪 BelgiumBredeneStax BelgiumM30–34
The record so far
Matthieu Bonne is a Belgian ultrarunner from Bredene whose leading performances span 24 hours, 48 hours, and six days. In June 2025, he covered 485.099 km at the GOMU 48-Hour World Championship, surpassing Yiannis Kouros’s 1996 mark and establishing the current IAU world record.
Nine months earlier, Bonne had completed 1,045.519 km at the 2024 GOMU Six-Day World Championship in Balatonfüred. The International Association of Ultrarunners lists that distance as the current ratified six-day world-best performance.
Bonne’s fixed-time progression also includes a Belgian 24-hour record of 275.250 km in Ireland. The IAU named him its 2025 Athlete of the Year in recognition of his record-setting season.
Defining performances
Performance history
| Date | Event | Performance | Result | Source |
|---|---|---|---|---|
| GOMU 48-Hour World Championship48-hour road | 485.099 km | Winner · IAU world record | View ↗ | |
| GOMU Six-Day World ChampionshipSix-day road | 1,045.519 km | Winner · IAU world-best performance | View ↗ | |
| Trasna Na Uaireanta 2424-hour road | 275.250 km | Winner · Belgian record | View ↗ | |
| 6 Days Race BelgiumSix-day road | 793.200 km | Winner | View ↗ | |
| Marathon des Sables237 km stage race | 36:23:53 | Finisher | View ↗ |
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