It can refer either to distance or time. It means that an object or event goes as far back in distance or time as some other object or event, which is used as a reference point. Eg: 1) The house was located as far back in the woods as the river. 2) His memory went as far back in time as the War of 1812. Far Back = at a considerable distance to the rear.

Hi, Sandra is correct, but it is also used to describe a period of time. Apple was making computers as far back as the 1970's, however they did not start making phones until 30 years later.

If you are in a room and someone asks you to go as far back as possible.....it means to go the furthest distance from them as you can go.