Signed in as:
filler@godaddy.com
Running Calculators
Predict Race Performance Based on Races at Other Distances
When predicting marathon performance based on times from shorter races, be aware that some calculators will predict an overly optimistic finish time for most runners:
- Race Time Estimator - Download Spreadsheet (Greg Maclin) *
- Distance/Time (McMillan)
- Distance/Time (Runworks)
- Distance/Time (RunningAHEAD)
- VO2 Max & Purdy Points - Distance/Time (Run-Down)
* I did a survey of runners on the old Runners World Online forum to find out which running calculators gave them the most accurate predictions. The results were all over the place and it became obvious to me that what was needed is a calculator that can take into account the individual endurance level of runners when making predictions. As a result, I created the "Race Time Estimator" spreadsheet (above) which uses an adjustable version of the Riegel formula. When using a single predictor race you manually select your estimated endurance level, but if you put in two different predictor races it will estimate your endurance level for you (the two races should be different distances).
Other Calculators
Heart Rate (Download Spreadsheet):
Input two of three variables (Distance/Time/Pace) - calculate the third:
Run/Walk Calculators:
- Gallowalking Pace Calculator (Scott Glazer)
- Run Walk Pace Calculator - Spreadsheet Download (Joe Ely)
Calculate Road Grade Based on Distance and Altitude Gain or Loss:
Nutrition Calculator:
WMA Age Grading (See how you rank):
- WMA Age-Grading (EML Sports - 2023 Factors)
- WMA Age-Grading (Howard Grubb - 2020 Factors)
- WMA Age-Grading (Howard Grubb - 2015 Factors)
- More Info About Age Graded Scoring
WMA Notes:
100% = Approximate World Record Performance
90%+ = World Class Performance
80%+ = National Class Performance
70%+ = Regional Class Performance
60%+ = Local Class Performance
Cookie Policy
This website uses cookies. By continuing to use this site, you accept our use of cookies.
Planning to Run Boston?
Even if you aren't, check out my "Pacing & Info" spreadsheet for the Boston Marathon - you can download the fully functional version for FREE and give it a test drive! (All my other pacing spreadsheets work the same way so this will give you a good idea how they work.)