5K calculator
Use this 5K age-grading calculator to add age and gender context to a short road race, track-style time trial or parkrun-distance effort. The result shows pace, age-graded percentage and an age-adjusted equivalent time.
Age-graded calculator
Results use sourced 2025 road-running age standards and are informational estimates, not official rankings.
Age-graded result
A 57-year-old male running 5K in 55:00 is age-adjusted to approximately 45:35. That means the performance is comparable to an open-age runner completing 5K in about 45:35.
2025 road age standards from Alan Lytton Jones' Age-Grade-Tables project (CC0-1.0); exact age 57, age standard 15:28, open standard 12:49, factor 1.207.Uses CC0 road-running age standards. Results are informational age-graded estimates, not official WMA rankings. Source files: 2025 Files/MaleRoadStd2025.xlsx, 2025 Files/FemaleRoadStd2025.xlsx at commit 4aac6737cb9f216c90a0a610355667cd3d921c61.Read the methodology
The 5K is short enough that speed matters, but common enough that runners of very different ages often compare results directly. A 25-minute 5K at 30 and a 25-minute 5K at 65 are the same clock time, but not the same age-group performance.
This page is useful for parkrun-distance thinking, but TruePace Run is independent from parkrun and does not produce official parkrun results or rankings.
Use the result when you want to understand a short race, club time trial or measured 5K in age-group context. It is especially helpful when raw pace has slowed a little but your training, effort and race craft still feel strong.
A 5K is honest in a very specific way. There is enough distance for pacing to matter, but not enough room to hide from speed. That makes it a useful benchmark for age-group runners who want a regular check on fitness without waiting for a half marathon or marathon block to reveal the truth.
The age-graded result does not replace the finish time. A 25:00 5K is still 25:00. What it adds is context: how that time compares with sourced 2025 road-running standards for your age and gender, and what the rough age-adjusted equivalent looks like.
Using the current TruePace Run calculator, a 25:00 5K for a male runner estimates at about 54.1% at age 40, 58.4% at age 50 and 63.5% at age 60. The raw time is identical, but the age-group context changes quite a lot.
For a female runner, a 30:00 5K estimates at about 48.8% at age 40, 53.9% at age 50 and 60.8% at age 60. That is why age grading can be useful for runners who feel the clock is becoming a slightly blunt instrument.
Start with the raw time, then look at the age-graded percentage and age-adjusted equivalent time. If you are comparing an old PB with a recent 5K, run both results through the calculator using your age on each race day.
Do not use the number to pretend every course is the same. A flat road 5K, a windy seafront effort and a muddy winter parkrun-distance run are different tests. Use age grading as a fairer lens, then add your own judgement.
Keep learning
FAQ
Quick answers for using this distance-specific calculator sensibly.
Yes, you can enter a 5K time to understand the age-graded context, but TruePace Run is independent from parkrun and does not produce official parkrun results.
For supported ages, the calculator uses the sourced 2025 road-running 5K standards directly rather than inventing a placeholder factor.
Compare the age-adjusted equivalent time and percentage alongside the raw 5K time, especially when runners are in different age groups.
