VOLUME REVIEW
An eight-week running log with a zero-distance week
Zero is a real value. A missing record is an unresolved question.
State the reporting window
Choose eight completed weeks and write down their start and end dates. A partial current week can lower the average simply because its final days have not happened yet. Keep the same calendar convention when repeating the review.
If a week contains no running, enter zero only when you know the history is complete. A disconnected watch or failed import can make an active week look empty. Check the source record before changing the interpretation of the average.
Include the zero in the denominator
The numbers in this example are illustrative, not a customer training record.
| Week, oldest first | Distance |
|---|---|
| 1 | 30 km |
| 2 | 34 km |
| 3 | 0 km |
| 4 | 36 km |
| 5 | 38 km |
| 6 | 40 km |
| 7 | 42 km |
| 8 | 44 km |
The sum is 264 km. Across eight completed weeks, the average is 264 ÷ 8 = 33 km. Dividing by the seven active weeks instead gives about 37.7 km. Both denominators can describe something, but they answer different questions.
Do not fill a gap with an invented workout
If week 3 is unknown, neither zero nor a guessed 35 km is a verified entry. Resolve the record where possible. If you cannot, report that the eight-week calculation is incomplete rather than presenting an exact-looking summary as a complete training history.
A deliberate week away from running may be important context. It does not need to be erased from the average. Likewise, an unusually large week should remain visible in the sequence instead of being hidden by the same overall mean as a more even history.
Review the sequence beside the average
The marathon volume review shows all eight entries as a chart. For this example, the first four weeks average 25 km and the last four average 41 km. That difference is visible even though the overall average is 33 km.
The tool summarizes distance. It does not decide whether the sequence suits a particular runner or event. Keep duration, effort, terrain and how the sessions felt alongside the arithmetic.