Useful examples
- Enter 4:00:00 to understand a common marathon benchmark by age.
- Enter 3:30:00 to compare a stronger recreational marathon result.
- Run the calculator again for a past marathon to compare age-adjusted progress over time.
Marathon calculator
Marathon Age-Grading Calculator
Use this marathon age-grading calculator to put a 26.2-mile result into age-group context. The output shows pace, age-graded percentage and an age-adjusted equivalent time.
Age-graded calculator
Enter one race result
Results use sourced 2025 road-running age standards and are informational estimates, not official rankings.
Age-graded result
Raw finish time55:00
Pace per km1:18
Pace per mile2:06
Age-graded percentage261.3%
Age-adjusted equivalent46:08
A 57-year-old male running Marathon in 55:00 is age-adjusted to approximately 46:08. That means the performance is comparable to an open-age runner completing Marathon in about 46:08.
2025 road age standards from Alan Lytton Jones' Age-Grade-Tables project (CC0-1.0); exact age 57, age standard 2:23:44, open standard 2:00:35, factor 1.192.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
Why marathon age grading is useful
The marathon is heavily shaped by endurance, pacing, fuelling, course conditions and long-term training. Age grading cannot explain all of that, but it gives a clearer comparison than raw finish time alone.
Use the result as a guide for context and goal setting. TruePace Run does not produce official rankings, coaching advice or race results.
Good uses for this page
- Comparing current marathon fitness with an older personal best.
- Adding age context to a comeback marathon.
- Setting a future goal that respects age, training and recovery.
Keep learning
Compare the result with useful context
FAQ
Marathon calculator FAQs
Quick answers for using this distance-specific calculator sensibly.
Is marathon age grading the same as a prediction?
No. It describes the age-graded context of a time you enter. It does not predict fuelling, pacing, weather or the final miles of a marathon.
Why use age grading for the marathon?
Marathon raw times can change with age, recovery and training load. Age grading gives a fairer comparison point across age groups.
Can I compare a marathon with a half marathon?
You can run both calculations, but compare them carefully. The distances place different demands on endurance, pacing and preparation.