Feature request: Expected finish time

[Upo]

It would be useful to have an audio cue for expected finish time, calculated from the actual workout's averages. I set the desired distance (maybe with some predefined values eg. Marathon, Half-marathon, Quarter-marathon and custom set distance) and theque says something like "Expected finish time would be x hours x minutes x seconds".
I used an app which had this feature (now discontinued), and it was very useful for me. But the app had a mistake, it auto stopped activity at the set distance, and it was not configurable. Ruined my life's best half marathon because it stopped few hundred meters before the finish.
So the set distance should not be a predefined workout distance, just the calculation base. Or at least configurable.