Yes, it was a four stride line. One stopped there, and I believe another stopped at the second jump when she did not have room to get back into a healthy canter. Plus another one had a funky jump after the first halt as well.
Two of the four forgot the final halt after the end jump.
For the previous poster who wondered about the final results after the test, forgetting or skipping a halt would usually be scored as a 50, while a refusal at a jump would be a 40.
In a testing situation, the judges might not give an actual score for the test and add those numbers together with the scores from previous rounds, but they would still follow the basic scoring guidelines for major faults.
At least the kids all seemed to be good sports about it, and the winner got to drive home with a new car anyway. Good for her!