The test is not meant to be completed, most who begin will not make it to the end.
At Camp Berlinsberg trainees are taken up into the Talloth Mountains in their Squads, given 3 days food, 1 days water and set loose. Under optimum conditions it is a 4 day hike back to base. They are under attack by Marines and shuttle, and other Squads, the entire time.
The record until 314AE was 5 and a 1/2 days when Delta-06 knowcked 2 hous off the time