Certain point in race-track corner, 4 letters
Critical point in racetrack turn, 4 letters
Highest point of something, 4 letters
It's all downhill from here, 4 letters
It's at the very top, 4 letters
Mountain climber's goal, 4 letters
Mountaineering goal, 4 letters
Part of the fastest line, usually, 4 letters
Point of culmination, 4 letters
Spot for the winner of king of the hill, 4 letters
Top of the world ma, 4 letters
The highest point of something, 4 letters