I just developed a custom running workout generator

Wow!
Thanks for the awesome bit of troubleshooting-- And now that you mention it, I do recall reading something about multiples of 200M (from a long time ago, I think).
Do you think I should code some kind of warning message into the web-site? Or do you think it would be better to just round up/down (“quantiize” those interval distances?))
Running for exact times is gonna be difficult when intervals of 200M are required.
Bummer.
Thanks Again-- You Rock
P.S. Here’s a feature request from 2018

And here’s a snippet from Zwift Insider-- they discuss the 200M limitation…