Well, I managed to find a place to start my week 4 off and I actually managed to complete the run early this evening without any problems too!
I drove a few miles from my sisters house in the small village down to the large Asda car park in Hayle. There, I ran out onto the main road and up the road that runs parallel with the estuary. When the pathway ran out, I turned around and headed back, then completed the run by running around the edge of the car park and harbourside.
It is true what they say, you really do build up enough stamina to do all what is required despite those doubts that you have it in you.
I was pleasantly surprised how I managed to complete it and that feels great! Yes, it was tough and my lower legs were aching like mad but I actually felt like it was all doing me good and I felt quite good after I completed it.