You can see the list here
https://forum.topeleven.com/tutorial...tml#post500463

The max value for level 4 is 7,5- 8 M' but a 4* player or a 19-20 y.o. with 6,5-7 M' is also a fast trainer.
The top fast trainers are rare specially the 18 y.o. , must search a lot.