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Age-Grade Calculator for Runners
See what your race time is worth at your age. A man aged 55 who runs a 5K in 22:00 has an age-graded time of 18:32 and an age grade of 69.15 %. A woman aged 60 with a 4:30:00 marathon grades to 3:35:03 (60.42 %). Enter your own race below; the result updates as you type.
- Your time22:00
- Age factor0.8425
- Age standard15:13
- Open-class standard12:49
Formula used
age-graded time = your time × age factor
age standard = open-class standard ÷ age factor
age grade % = age standard ÷ your time × 100
Open-class standards in the 2025 tables. Men: 5K 12:49, 10K 26:24, Half marathon 57:31, Marathon 2:00:35. Women: 5K 13:54, 10K 28:46, Half marathon 1:02:52, Marathon 2:09:56.
Worked example
Man, 55, 5K in 22:00 (1,320 s). The 2025 factor for age 55 at 5K is 0.8425. Age-graded time = 1,320 × 0.8425 = 1112 s = 18:32. Age standard = 769 ÷ 0.8425 = 15:13. Age grade = 15:13 ÷ 22:00 = 69.15 %.
How the tables are made
The factors come from the best times run at each single age, collected by Tom Bernhard, with smooth curves fitted by Alan Jones. Standards were set for the 5K, 10K, half marathon and marathon. A factor of 1 means no age adjustment. For men aged 30 the 5K factor is 0.9999, so the time hardly changes.
Age factors, ages 30 to 100
| Age | 5K | 10K | Half | Marathon |
|---|---|---|---|---|
| 30 | 0.9999 | 1.0000 | 1.0000 | 1.0000 |
| 35 | 0.9824 | 0.9909 | 0.9928 | 1.0000 |
| 40 | 0.9475 | 0.9636 | 0.9638 | 0.9783 |
| 45 | 0.9125 | 0.9261 | 0.9249 | 0.9373 |
| 50 | 0.8775 | 0.8886 | 0.8860 | 0.8963 |
| 55 | 0.8425 | 0.8511 | 0.8471 | 0.8553 |
| 60 | 0.8075 | 0.8136 | 0.8082 | 0.8143 |
| 65 | 0.7725 | 0.7761 | 0.7693 | 0.7733 |
| 70 | 0.7353 | 0.7386 | 0.7304 | 0.7323 |
| 75 | 0.6847 | 0.6928 | 0.6830 | 0.6857 |
| 80 | 0.6191 | 0.6301 | 0.6185 | 0.6219 |
| 85 | 0.5385 | 0.5508 | 0.5370 | 0.5407 |
| 90 | 0.4429 | 0.4546 | 0.4384 | 0.4419 |
| 95 | 0.3323 | 0.3418 | 0.3228 | 0.3257 |
| 100 | 0.2067 | 0.2121 | 0.1901 | 0.1919 |
| Age | 5K | 10K | Half | Marathon |
|---|---|---|---|---|
| 30 | 0.9959 | 0.9980 | 0.9979 | 0.9983 |
| 35 | 0.9793 | 0.9857 | 0.9849 | 0.9879 |
| 40 | 0.9499 | 0.9623 | 0.9601 | 0.9680 |
| 45 | 0.9078 | 0.9278 | 0.9234 | 0.9386 |
| 50 | 0.8592 | 0.8822 | 0.8753 | 0.8998 |
| 55 | 0.8107 | 0.8325 | 0.8235 | 0.8515 |
| 60 | 0.7621 | 0.7828 | 0.7718 | 0.7965 |
| 65 | 0.7136 | 0.7331 | 0.7200 | 0.7412 |
| 70 | 0.6650 | 0.6834 | 0.6683 | 0.6859 |
| 75 | 0.6165 | 0.6337 | 0.6165 | 0.6290 |
| 80 | 0.5640 | 0.5745 | 0.5554 | 0.5557 |
| 85 | 0.4938 | 0.4963 | 0.4742 | 0.4624 |
| 90 | 0.4046 | 0.3991 | 0.3731 | 0.3491 |
| 95 | 0.2964 | 0.2829 | 0.2519 | 0.2158 |
| 100 | 0.1692 | 0.1477 | 0.1108 | 0.0625 |
Multiply your time by the factor to get your age-graded time.
Every single age from 5 to 100: see the full age-factor tables or download the PDF.
Questions and answers
What is age grading?
Age grading compares your time with a standard time for your age and sex over the same distance. It gives two numbers: an age-graded time (your time as if you were in your open-class prime) and a percentage of the age standard. This lets you compare races at different ages, and runners of different ages and sexes.
How is the age-grade percentage worked out?
Age standard = open-class standard ÷ age factor. Age grade % = age standard ÷ your time × 100. Age-graded time = your time × age factor.
What is a good age-grade percentage?
Higher is better, and 100 % matches the age standard. We do not label percentages as “good” or “world class”, because we did not find a published source for such bands that fits these tables. The most useful comparison is with your own earlier results.
Which tables are used?
The 2025 road running standards by Alan Jones, approved by the USATF Masters Long Distance Running Council on 10 January 2025, for ages 5 to 100. They are public domain (CC0). This is an independent calculator, not an official WMA or USATF tool.
Why does my result differ from other calculators?
Several versions of the road tables exist, for example 2015, 2020 and 2025, and some calculators still use older ones. Track tables are also different from road tables. Small differences in rounding can change the last decimal.
Does it use my exact birthday?
No. Enter your age in whole years on race day. The tables give one factor per year of age.
Sources
- Jones, A. Age-Grade-Tables, 2025 Road Running Standards (files MaleRoadStd2025.xlsx, version 2025-07-27, and FemaleRoadStd2025.xlsx). Approved by the USATF Masters Long Distance Running Council on 10 January 2025. Released under CC0 1.0 (public domain). Single-age bests compiled by Tom Bernhard.
- History of the tables (WAVA 1989 and 1994 booklets, Jones and Harvey tables, WMA/USATF approval of the 2010 and 2015 versions): README of the same repository.