Related Clues:

• When one gives up, having lost track? (3,3,2,3,4)
• Point beyond which one can't go (3,3,2,3,4)
• The last possible point (3,3,2,3,4)
• Extreme point of turnaround? It's D (3,3,2,3,4)
• As far as it goes, in a way (3,3,2,3,4)