I'm a former college distance runner. This is neat. I always converted pace in my head, but this would be useful as an app I could quickly check. Since it's pre

I'm a former college distance runner. This is neat. I always converted pace in my head, but this would be useful as an app I could quickly check. Since it's presumably all frontend JS, have you considered enabling it as an offline app so people can keep it on their home screen? I've done this before and it's pretty easy - you just need to make sure to include a cache manifest listing all the files required to run offline, and a favicon set with icons for iOS/android (google "favicon generator"). In terms of mobile UI, it might be nice to eliminate the need to scroll to see results. See if you can fit the whole interaction in one screen (maybe push up the inputs to make room for the results).