OK, so the last run of week 3 is now under my (ever reducing) belt. Did a total of 4k including the walking so not exactly speedy.
Sense of achievement? Yes and no.
I've done all my running in the gym to ensure my aged knees don't get too much of a pounding plus it's easy to control the pace. (Once I've finished running, I hit the weights and machines followed by a good 10 minutes on the bikes.) I'm not sure I'll feel a "proper" runner until I get out into the open but, to be honest, I have some reservations about hauling my 120kg frame around the local footpaths at the moment. The ground is hard and the best part of 40 years of playing and refereeing rugby has taken its toll on my knees and I don't have a great deal of cartilage left in one of them after a couple of trimming sessions.
I think I'll continue with the weight loss and venture out when I'm a slim and sylph-like 100kg!