salaah

From which point should safar distance be calculated

Q: I have a question regarding qasr.

The distance between Pietermaritzburg and Durban is 77 km which is not qasr distance. I’ve heard a few people saying that if you continue traveling around the area e.g. to North Beach or Westville then you should start reading qasr salah. Is this correct? If it is, then would you still be regarded as a musaafir if you spend nearly every weekend in Durban?