IAU M45 48-hour world record
Won the Taipei 48-hour race with 451.203 kilometers, also setting a Norwegian national record.
Source-checked athlete record · Updated Aug 18, 2026
Simen Holvik
M45 48-hour world record holder and 2025 Badwater champion
Simen Holvik is a Norwegian fixed-time and road ultrarunner, the M45 48-hour world record holder and 2025 Badwater 135 champion.
NorwayHundvåg, NorwayM45–49
The record so far
Simen Holvik is a Norwegian ultrarunner whose results combine fixed-time racing, long road events, and extended point-to-point projects. His published race history includes victories from 24 hours through 48 hours and repeated finishes at Spartathlon and Badwater.
At the 2026 Taipei Ultra Marathon, Holvik covered 451.203 kilometers to win the 48-hour race. The result established a Norwegian national record and the current IAU M45 world record.
Holvik won the 2025 Badwater 135 in 21:47:45 after placing second overall and first among men in 2023. He was also runner-up at the 2023 Spartathlon and completed an approximately 2,600-kilometer run from Nordkapp to Lindesnes in 25 days, 15 hours, and 20 minutes in 2021.
Defining performances
Performance history
| Date | Event | Performance | Result | Source |
|---|---|---|---|---|
| Taipei Ultra Marathon48-hour track | 451.203 km | 1st overall · IAU M45 world record | View ↗ | |
| IAU 24-Hour World Championships24-hour road | 260.247 km | 15th man | View ↗ | |
| Badwater 135135-mile road | 21:47:45 | 1st overall | View ↗ | |
| Spartathlon246 km road | 24:18:50 | 5th overall | View ↗ | |
| 24 Ore di Torino24-hour road | 246.435 km | 1st overall | View ↗ | |
| Fat Ox 48 Hour Run48-hour track | 360.930 km | 1st overall | View ↗ | |
| Spartathlon246 km road | 22:17:23 | 2nd overall | View ↗ | |
| Badwater 135135-mile road | 22:28:08 | 1st man · 2nd overall | View ↗ | |
| 24 Hours in Hell24-hour road | 253.355 km | 1st overall | View ↗ |
Related coverage
Runner directory
More athlete records
Mark DowdleLast Soul champion and German-soil record holderHendrik BouryGerman backyard record holder and elite 48-hour runnerNorman Mascher-AspensjöBack-to-back German 24-hour championMartin StillerGreenLoop winner and Last Soul final-five runnerAyyoub El OsroutiLast Soul assist and Germany’s provisional No. 2Harvey LewisTwo-time Big’s champion and Badwater 135 winner