Running shoes

I stopped running about a year ago after an old knee injury caused me much discomfort. I have been walking ever since. Today I decided to try running again. Not the smartest really on a day with a 30°C high forecast. I ran about 6 km of the 8 km course and walked the remainder. I am pleased to report that the knee was fine however the general fitness was not the greatest. Got to start somewhere I suppose.