How much rest is required after running a marathon?

Welcome to Ask Coach Parry once again. Today's question is related to training for the Comrades Marathon and it comes from Delont Barnard.

It is another great question. Delont wanted to know what is the recovery advice - training and nutrition wise - for when you have run a marathon as a training run? And do you need to continue doing your long runs in the week or two following that marathon?

He said he ran a 4.30 marathon this past weekend, does he still need to do his long runs in the upcoming couple of weeks?