I was looking for a mileage calculator to find possible routes, better than this on M&M site, something which supports all Star Alliance routes. So I created it as a mobile Android application.
Maybe you are interested?
There are no ads, I do not earn anything. It is just for fan and part of my CV.

How it works? By choosing e.g the first and third airport, you will see by what other airports you can fly with all M&M rules and how many miles you need.

Award Routes Finder - link to Android Play