Distance flown at landing having missed a turnpoint.

[philderbeast]

If a pilot misses a turnpoint but carries on to goal how does this work with the distance difficulty calculation that compares flown distance to the landing point among pilots?

The usual method to calculate distance flown is to subtract the distance to goal from the task distance. When missing a turnpoint, a pilot would have to fly back to the missed turnpoint and then on to goal so it would be quite possible for them to have a negative flown distance eventually if the missed turnpoint was early on in the task and if the pilot flew far enough.

An example of this is GlideAngle/flare-timing#221.