noun
turning point; turnaround point
Used for the point where one turns back, especially in races, journeys, or metaphorical progress.
See also: 折り返し点 (おりかえしてん)
マラソンでは折り返し地点で選手が方向を変える。
In a marathon, runners change direction at the turnaround point.
このプロジェクトは折り返し地点を過ぎた。
This project has passed its turning point.