It souds cool and possible to work but I want to remind you that people happily used fake gps apps in even pokemon go to show themselves walking/running. Getting rewards. How can this app block this especially on android, I don't know.
Thanks for this comment, yeah people are always trying to gain some kind of benefit for themselves, so it can happen that there are some fraudulent cases.
This one is one good question, I try to get an answer for this.

But first of all, there is until now just one big event in September in Vilnius, Lithuania. There is an
Blockchain Run in which every runner will be rewarded with LYM tokens via the Lympo digital fitness wallet.