Your 5K Says Sub 3 — Your Marathon Says No
All In Run Club Podcast - by Lee Grantham
- Published
- July 2, 2026
- Duration
- 15:44
- Summary source
- description
- Last updated
- Jul 2, 2026
Discusses health.
Summary
An 18:30 5K should mean a comfortable sub-3 marathon. Every race-time calculator is certain of it. So why do so many fast 5K runners keep missing sub-3 — while runners who can't break 19:30 run it every single time?This video shows you what your 5K actually measures, why the marathon rewards something completely different, and the one change to your Satur…
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Show notes
An 18:30 5K should mean a comfortable sub-3 marathon. Every race-time calculator is certain of it. So why do so many fast 5K runners keep missing sub-3 — while runners who can't break 19:30 run it every single time?This video shows you what your 5K actually measures, why the marathon rewards something completely different, and the one change to your Saturday that builds more marathon fitness than chasing a parkrun PB ever will. If you are a time-poor runner with a job, a family and a marathon go
Themes
- health