Board Thread:Game Discussion/@comment-36073160-20180820204145/@comment-29898480-20180820211750

Enduros are useful for exploring track limits - the distance counter goes red when you're 4-wheels-off. It allows you to toodle around until the timer runs out, mapping the edges of what FM allows. It's not always obvious where the edge is, and the rules for whether a type of surface is "in" or "our" is not consistent from track to track.