Marathon readiness is not a test of whether you could race 42.2 kilometres today. It is a moving assessment of whether your training is developing in the direction required for race day. Training history, threshold-related performance and ordinary training data can all provide useful evidence of that trajectory.
Ten weeks before a marathon, you should not expect to be able to race it today. What matters is whether the work you are doing now is taking you in the right direction.
That distinction changes how you read the training. A long run, a threshold session or a missed week matters because of what it tells you about the preparation as a whole, not because any one session gives a final verdict.
It is one of the most useful questions in marathon training. It is also what SmartRunning means by marathon readiness.
Readiness is about where you are heading
If your marathon is still ten weeks away, being “ready” should not mean that you are ready to race 42.2 kilometres today.
The relevant question is whether your preparation is developing in a way that puts you on course to be ready when the marathon arrives.
There is scientific support for looking at marathon preparation this way. In a small longitudinal study, 16 recreational runners were assessed at five points during a 16-week marathon preparation. Physiological measures taken as the training progressed, particularly speeds associated with aerobic and anaerobic thresholds, were strongly related to eventual marathon performance. In a much larger study of more than 25,000 recreational marathon runners, information derived from ordinary training activities was used to estimate critical speed, which in turn provided useful predictions of marathon performance.
Neither study establishes a universal “marathon readiness score”. But together they support an important principle: what happens during your preparation contains useful information about how prepared you are becoming for the marathon.
This is also how SmartRunning approaches marathon readiness. We combine insights from sports science about what physiological and training data collected during preparation can tell us, with years of running and marathon coaching experience, dedicated training algorithms and what we have learned from testing SmartRunning with real runners. The result is an evidence-informed assessment of how your preparation is developing towards race day.
This is the job of the SmartRunning readiness score
Once marathon-specific preparation has started, SmartRunning’s readiness score brings those different sources of information together to answer one practical question:
How well is your preparation progressing towards being ready on race day?
It is not asking whether you should run today, nor is it claiming that you could run your marathon tomorrow. It follows how your training develops over time and gives you a current view of where you stand relative to the marathon ahead.
As your training creates new evidence, that assessment can change. Simply reaching another week on the calendar does not automatically mean that your preparation is progressing as expected.
No published study validates one universal marathon-readiness score. The evidence supports tracking meaningful changes during preparation; the SmartRunning score is the product’s way of bringing those signals together.
See how SmartRunning follows your preparation over time and helps you understand whether you are still moving towards race day.