Last verified against the 2025 age-grading tables: every factor for ages 5 to 100, men and women.
Example: 5K in 22:00, male, age 50
A 5K of 22:00 scores 66.4% against 14:36, the age standard for a male runner aged 50 at that distance. Adjusted for age, it equals 19:18 in the open class. The second table gives your factor at the 5K, 10K, half marathon and marathon, the four distances behind the 2025 tables. Multiply a race time at one of them by the factor beside it to get the age-graded time. Enter your own race above to replace this example.
| Your result | Value |
|---|---|
| Age-graded timethe time adjusted to the open class | 19:18 |
| Age standardfor this age and sex | 14:36 |
| Distance | Your factor, male, age 50 |
|---|---|
| 5Kyour race | 0.8775 |
| 10K | 0.8886 |
| Half marathon | 0.8860 |
| Marathon | 0.8963 |
Age grade = open-class standard ÷ age factor ÷ your time × 100. Age-graded time = your time × age factor. Factors: 2025 USATF MLDR road age-grading factors (Alan Jones), approved 10 Jan 2025.
What an age grade tells you
An age grade compares your race time with the age standard: the time the 2025 tables set for the best runners of your age and sex at that distance. Matching the standard is 100%, and the percentage shows how close you came. It lets you compare your races across the years, and with runners of other ages, on one scale.
How the age grade and the age-graded time are worked out
Each age and sex has a factor at each distance. The age standard is the open-class standard divided by your factor, and your age grade is the age standard divided by your time, times 100. Your age-graded time is your time multiplied by the factor: the time your race equals in the open class.
The 2025 tables do not define the age-graded time, so we use the usual convention: time multiplied by factor.
Alan Jones built the 2025 factors at the 5K, 10K, half marathon and marathon, and worked out the distances in between from those four. USATF's Masters Long Distance Running Council approved them on 10 Jan 2025, which is why we call them the 2025 USATF MLDR road age-grading factors (Alan Jones).
Open-class standards in the 2025 age-grading tables
The open-class standard is the time behind every age standard at that distance: at the ages where the factor is 1, it is the age standard itself.
| Distance | Men | Women |
|---|---|---|
| 5K | 12:49 | 13:54 |
| 10K | 26:24 | 28:46 |
| Half marathon | 57:31 | 1:02:52 |
| Marathon | 2:00:35 | 2:09:56 |
Age grading questions
Which age should I enter?
Your age on the day of the race, in whole years. The 2025 tables give a factor for every age from 5 to 100 and do not name a rule, so we follow age on race day.
Is this the WMA age-grading table?
No. World Masters Athletics co-approved the 2010 and 2015 tables. The 2025 factors were approved by USATF's Masters Long Distance Running Council alone.
Does my factor change with the distance?
Yes. The 2025 tables set a separate factor for every age at every distance. The card lists yours for the 5K, 10K, half marathon and marathon.
Sources
- Alan Jones, Age-Grade-Tables (road running age standards)The 2025 workbooks MaleRoadStd2025.xlsx and FemaleRoadStd2025.xlsx, repository commit 4aac673 (27 Jul 2025). Running age bests by Tom Bernhard. Approved 10 Jan 2025 by the USATF Masters Long Distance Running Council. CC0 licence. Read 4 Oct 2026.
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