Discussing how far a missile will go is irrelevant. This is like discussing how far a rifle bullet will go. A 7.62mm bullet may go as far as 5 or 6 km before it falls on the ground. But no one ever discusses it. The important number is it’s effective range, in which it can kill an enemy. This could be 400m or 700m. That is why the manufacturer gives say 500m effective range and 700 m suppression range (500m is the range where you can aim and target correctly and the 700m being able to kill but not accurate to aim)
This is why missile ranges are given as effective and no escape zone.
Effective range Is the range in which the missile carries enough kinetic energy to catch up with the target and hit it. (Plane may still evade the missile). No escape zone is the range in which missile has plenty of energy as not to allow the target to escape. (Missile has power and/or speed to execute multiple manoeuvres.)
For those interested , below is a computer simulation study of amraam aim-120C missile. This missile has a dual thrust engine (Boost + Sustain) . It also gives examples of it if it had a dual pulse engine.
Due to this type of engine’s kinematic difference, the missile shows gains of more range, but loses more overall speed and time for a given altitude and a given launch platform speed. Also one has to remember that it makes a big difference where the second pulse is activated. If activated at the right time this would increase the range further too.
Most important player here is the altitude. Higher a missile is launched the more range it has. Also the higher the speed of the plane at launch the higher the missile range.
Also one has to remember that each missile’s kinematic performance differs a lot. It is possible to increase immensely the range of a missile with the addition or subtraction of fins and canards. These are questions that can best be answered by missile manufacturers themselves.