You beat me to it, Daisy - I'm doing the GNR the following week and could do with some advice about tapering.
I did a 32-mile week and my only 13-mile long run last week, and plan to do 17 training miles plus a 10K race this week and a 7-mile maintenance run next Tuesday. That takes me to 12 days pre-GNR, and my schedules are then blank until the last two days (rest and travel).
I was vaguely planning to fit in 10 miles 10 days before the GNR, my normal gym session 8 days before, then halve the length of each run during the last 7 days. Would that be realistic?
I'm not looking to win, would be delighted with 2:15, but in reality will probably jog round with the 2:30 pacers.