Numbers on this site are meant to be checked. When one is wrong, this is what we do about it.
Reporting a mistake
Use the contact form. Tell us the page and the figure; if you can, include what you expected and how you worked it out. You do not need to leave a name or email unless you want a reply.
What we do
- Reproduce it. We recompute the figure from the formulas on the how we calculate page.
- Fix it at the source. Every table is generated from one shared set of formulas, so a fix applies everywhere that figure appears, including the calculators and the downloadable distance table.
- Mark it. The page’s “last checked” line gets the new date and a short note saying what changed. We do not change that date unless the content actually changed.
- Log it here. Corrections that change a number or a recommendation are listed below with the date, permanently.
We aim to answer reports within 7 days. Wording fixes and typos are corrected without a log entry; anything that changes a number, a rule or advice is always logged.
What counts as a correction
- A figure that does not match its stated formula.
- A formula or assumption that is wrong or out of date (for example, a conversion factor).
- A statement attributed to a source that the source does not support.
- A page that answers a different question from the one in its title.
Differences of opinion about training are not corrections, but we read them, and they sometimes lead to a clearer page.
Change log
| Date | Page | What changed |
|---|---|---|
| 2026-10-04 | Whole site | First published edition checked page by page. The 27 single-session pages were folded into the nine week pages, half-minute paces into the whole-minute pace pages, and the six “weeks off” pages into the restart table, so that each question has one page. |
| 2026-10-04 | Distance table | First edition of the session distance table and CSV. |
No reader-reported corrections yet.