Age-Graded Performance Calculator
Age-Graded Performance Calculator
Not all personal bests are equal — a 42-minute 10K at 25 and a 42-minute 10K at 65 represent very different levels of performance. This tool estimates your age-graded percentage: how your result compares to the open-class world-best standard once age-related decline is accounted for, so you can track genuine progress and compare fairly against runners of any age or gender.
Calculate your age grade
What that age-grade is worth at other distances
| Distance | Equivalent time |
|---|
How age grading works
Every distance has an open-class world-best standard for men and women. As athletes age past their physical peak (typically their early-to-mid 20s for road running), performance naturally declines — slowly at first, then accelerating from the 60s and 70s onward. Age grading works out the equivalent standard for your specific age using the official USATF/WMA road running tables, then expresses your actual time as a percentage of that age-adjusted standard. The same tables are used by race organisers and masters athletics bodies worldwide, so your result here should line up with age grades quoted elsewhere.
- 90%+ — World Class
- 80–89% — National Class
- 70–79% — Regional Class
- 60–69% — Local Class
- Below 60% — Still a genuine athletic achievement — most runners never get here
Age grading is especially useful for masters athletes comparing themselves against their younger selves, or against runners of a different age or gender on a level footing. Want a personalised training plan built around your current age-graded level? Take a look at bespoke training plans or online coaching, or get in touch for a free, no-pressure chat. For a goal-time breakdown rather than an age comparison, try the Race Time Predictor.