Can anyone run these numbers? 738, trip length 1590nm/2491km, runway length 2427m/7963 feet, OAT 83F/23C.
So many variables.
Assuming about 13T of gas, 170pax, nil wind, 26k engines, bleeds on, it would be at 35ft about 100m prior to the end of the runway using an assumed temp of 39 degrees. If they wanted to use full thrust it would be at 35ft about 400m prior to the end of the runway. V2 of about 150.
There are potentially other variables that would make quite a big difference though.