@whenrealityhurts
Looks like I caught your inexperience John...
No sir, you have been hoisted on your own petard.
What J_T wrote was;
what do you do in the case where you have, say, 300 - 400ft spare pad in front at V1
To which you responded with the derogatory comment above and continued with;
Run any Part 25 aircraft you want, your choice...and tell me where you can in any way possible be at V1, using legal balanced field numbers and only have 3-400 feet ahead.
This shows that you completely misunderstood what you were replying to. If you read it properly, John's hypothetical was postulating the case where there is only 300 to 400 feet
IN ADDITION to the distance required to stop the aircraft from V1. The critical word is "spare".
A little more thought and less posturing might have led to you having a better understanding here.