Running or jogging is relative. At a similar speed, a guy 6‘2" will set a different gait than a guy 5‘7". The shorter guy will move his legs more.
The question is speed or the pace set to run or jog 2.4 kms in about 12 mins. It can be converted to running an 8 minute mile. So if you can run a mile in 8 minutes, or 2.4 kms in about 12 minutes, then you are excellent. Yet, thats just a marker for the fitness test.
In BMQ, the expectation is for the recruit to run upwards of 5 or 6 kms. I don‘t believe theres a time limit on that. In the 3rd or 4th week of BMQ, a fitness assessment is done and another fitness level is expected. Over BMQ, they work the recruit up during the 11 weeks.
I think those who can run 2.4 kms in 15 mins have the VO2 and stamina to be successful.
But don‘t get stuck on that. At the end of BMQ, an obstacle course and later a 15 km ruck march has to be done in 2 hrs 26 mins or something like that. I‘m not sure if there is a pass or fail if the time in not meant. But that march not only takes good VO2, but good upper and lower strength and stamina.
As they say, its better to be in the good overall physical shape before you get there. For those who are in poorer condition, those PT sessions will be more difficult but not impossible if you‘ve meant the minimum standards.