Easy to use training tools for runners
Simple tools for runners. Ad free, easy to use and helpful.
Each of these is something I built for my own coaching work, or wished existed when I went looking. They're all free, ad-free, and require no signup. If you find one useful, that's the whole point.
Estimate Your Half Marathon Time
Half Marathon Time Predictor
The calculator below uses an established method, The Riegel Formula, to estimate your marathon finishing time based on recent race tim...
Use toolGet a rough idea of your lactate threshold pace
Lactate Threshold Calculator
Use toolEstimate Your Marathon Finishing Time
Marathon Time Predictor
The calculator below uses an established method, The Riegel Formula, to estimate your marathon finishing time based on recent race tim...
Use toolHow much you should eat during long runs
Running Nutrition Calculator
Fuelling shouldn't be the complicated part of a long run. Tell this calculator roughly how long you'll be out and how many carbs are i...
Use toolRun Pace Calculator
Running Pace Calculator
Enter any two of the three - your pace, your distance, or your total time - and the calculator works out the missing one.
If yo...
Use toolEstimate your time across various distances
Running Race Predictor
Enter a recent race or all-out time trial, and the calculator estimates what you'd run at other common distances - 5k, 10k, half marat...
Use toolGet an idea of your VO2 Max
Running VO2 Max Calulator
VO2 Max sounds like something only serious athletes care about. It's not. It's just a number that tells you how fit your heart and lun...
Use toolEasily build interval sessions and running workouts
Structured Workout Builder
Add steps one at a time - a warm-up, the work part, a cooldown - or use the Repeat block to wrap a set of intervals around a number of...
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