New features in my pace percentage calculator

I just updated my pace percentage calculator with a couple of handy new features. The web app now supports decimal input and output, 200m splits, and between-session pace memory.

📱 Try out the updated pace percentage calculator here! 📱

These are small changes but make life a lot easier if you are planning Canova-style percentage-based workouts.

Read on for more info on these new features!

Decimal input and output

For track runners I often find it useful to use per-400m or per-200m splits as the basis for pacing—for example, starting with 1:00.0 (per 400m) for a 2:00 800m runner is much easier than trying to use 4:01/mi or 2:30/km. 

The calculator used to only support decimal output, and only for 400m splits. Now, you can toggle decimal input and output together using a simple button, just like on my race pace calculator. 

Conversion to and from 200m splits

During the indoor track season I was often providing workout splits for 200m tracks, and it was a little annoying to have to output a 400m split and divide by two in my head. Now you can directly convert to and from per-200m pace as well (which works great in tandem with the decimal feature).  

Between-session pace memory

The pace percentage calculator now remembers where you left off—if you’ve been calculating all your marathon workouts based on 6:52/mi pace (which is 3:00 for the marathon), that same input pace will still be there when you come back tomorrow. There’s also a new reset button at the bottom to restore the default settings.  


These are small changes but together they make a big difference! My pace percentage calculator is still the most popular app on my site, and for good reason: it makes Renato Canova-style percentage-based workouts super easy to do.  

Come to my first live event in Minneapolis on April 30

A reminder that I’m hosting my first live event the evening of April 30th in Minneapolis, MN! If you’re in the area, join me for a live lecture, Q&A session, and book signing. See you there!

Get tickets at https://luma.com/gbsf5frb.


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If you're training for a marathon (or thinking of training for one), you'll definitely want to check out my new book, Marathon Excellence for Everyone. Marathon Excellence lays out a comprehensive, modern approach to running your best marathon ever, complete with five training plans that span a wide range of mileage levels.

For international readers, there is also a Metric Edition with all workouts and paces in kilometers!

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About the Author

John J. Davis, Ph.D.

I have been coaching runners and writing about training and injuries for over 12 years. I've helped complete novices, NXN-qualifying high schoolers, elite-field competitors at major marathons, and runners everywhere in between. I have a Ph.D. in Human Performance, and I do scientific research focused on the biomechanics of overuse injuries in runners. My new book on marathon training, Marathon Excellence for Everyone, is now available on Amazon!

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