I'm running the Brighton Marathon in two weeks time but my training hasn't quite gone to plan. My plan over the last few weeks would have seen me run a 17/16/18/20/20 mile runs. I have managed most of the mid week runs but I missed the 17 due to flu so replaced the 16 with the 17 and that went well. Unfortunately I missed the 18 mile because I had only just landed from a 12 hour flight that day and couldn't squeeze it into the week. I then did the 20 but, again, due to something I picked up from the flight had a virus of some sort and only made it to 10 miles before I had to start walk/run for the rest of the 20 miles. This week I was supposed to do the last long run of 20 miles but couldn't due to some very stiff calfs (from last weeks 20 miler).
I am now in a dilemma. I can do some shorter runs but the only time I can do a decent long run is next Friday (9 days before the race). I was going to try the 20 miler all being well but I'm now thinking that might be too long, too close to the race. I'm aware of the 'can't get any fitter' and 'need to arrive at the start line fresh' advice.
Please could I get some advice on what people think I should do? My plan has a 12 mile run but I don't think that's far enough.
Also, I was following a sub 4 hour plan. I managed a 1:47 half (which is 3 mins slower than I was expecting) during training. I am now thinking of following the 4:15 pacers and see how I feel after 20 miles knowing I won't be able to do 4 hours. Is this too fast based on my lack of long runs?