Sport Canterbury has provided these helpful 6 week training programmes to ease you into running and gradually build your fitness before the event. Print them out, put them somewhere you can see them, and then get going!
You can mix up the walking and running options to suit yourself. It helps to remain active on your rest days too. Try walking or cycling to work, going for a swim, or any other sports or exercise you like.
Check out our local walkways and parks for a bit of variety in your training and to give your legs a break from the hard footpaths. Remember that some gentle stretches will help take any stiffness or tiredness from your leg muscles.