This question is based on Adnan Syded case. I am not sure on what the answer. Does anyone know?

This question is based on Adnan Syded case. I am not sure on what the answer. Does anyone know? i keep reading but I can't find the answer. I think the narrator took 3 years but not surejQuery2240712979116448947_1536603670840?

How long did it take for the narrator to recreated the route, which the prosecution asserts is the route

   that Adnan took the day that he murdered Hae