Marathon Age-Graded Calculator
So you ran a marathon. Enter the time, your sex and your age on race day and see what it is worth against the world best for that age. A 3:38 at 55 and a 2:50 at 30 can be the same quality of run. This is where you find out.
Your race
Age-graded percentage
Enter your chip time and age at race to see your age-graded percentage, the open-class equivalent time, and the time you’d need today to match it.
What is a good marathon time for my age?
The standards pages list the finish time that scores 50, 60, 70, 80 and 90% at every age from 18 to 99, straight from the same tables this calculator uses.
Questions
What is a good marathon time for my age?#
A 50-year-old man reaches 70% with 3:12:12 and 80% with 2:48:10. A 50-year-old woman needs 3:26:17 for 70% and 3:00:30 for 80%. The marathon standards page lists every age and tier from 18 to 99.
How does age grading compare to a Boston qualifying time?#
Boston standards are five-year bands and were set by hand. Age grading uses single-year ages and a continuous curve. The two agree at some ages and disagree by several minutes at others, which is exactly what the tables are for.
Which tables does this calculator use?#
Road results are graded with the Alan Jones 2025 tables, approved by the USATF Masters Long Distance Running Council in January 2025. Track uses WMA 2023. Both are single-year age tables, so the result reflects your exact age on race day rather than a five-year bracket.
What counts as a good age-graded percentage?#
The usual shorthand is 60% local class, 70% regional class, 80% national class and 90% world class. In a big-city marathon field roughly one finisher in eighty reaches 80%. Anything above 70% puts you in the sharp end of most races.