What does the percentile mean?

Your percentile indicates the percentage of runners you finished ahead of. A 75th percentile means you were faster than 75% of runners. The 50th percentile is the median (average) finisher.

How accurate are the percentile estimates?

These are estimates based on aggregate data from large races (parkrun, major marathons). Actual percentiles vary by race — a local parkrun has different demographics than a championship marathon. Use this as a general guide.

What is age-graded time?

Age-graded time adjusts your finish time to account for the natural slowing that occurs with age. It shows what your time would be equivalent to at peak age (approximately 25–35). This allows fairer comparison across age groups.

What is a good percentile for a recreational runner?

For recreational runners, finishing in the 40th–60th percentile is typical. Regular trainers often reach the 60th–80th percentile. Club-level runners are typically 80th–90th percentile, and competitive athletes are 90th+ percentile.

RunCalcs

Race Percentile Calculator

Find out how your race time compares to other runners.

Race DistanceDistance measurement

GenderEnter the gender

Finish Hours

Time in hours

Finish Minutes

Time in minutes

Finish Seconds

Time in seconds

Age

Your age in years

How We Calculate This

Percentile Estimation

Finish times for large races approximate a normal distribution. The calculator:

Calculates a z-score from your time relative to the average and standard deviation
Converts the z-score to a percentile using the cumulative normal distribution
Applies an age-grading factor to estimate age-adjusted performance

Average times are derived from aggregate data of major races including parkrun, London Marathon and similar events.

Frequently Asked Questions

Related Calculators

Marathon Time Predictor

Predict your marathon time from a shorter race result.

Half Marathon Predictor

Predict your half marathon time from 5K or 10K results.

10K Predictor

Predict your 10K time from a 5K or parkrun result.

5K Predictor

Predict your 5K time from shorter or longer race results.

Parkrun Predictor

Predict your parkrun time from other race distances.

Last updated: 2026-03-03

All calculations are estimates. Always consult a coach or medical professional for personalised training advice.