What if I want a 4 hour marathon?

I've posted a few things on here about wanting to run a 4 hour marathon. During the program we have had two 10k time trials. I'm not any good at them! Both of them came in at close to 58 minutes... not even close to what I'm capable of. My half marathon pace is faster than that! Ugh. I just could not find my high gear during those runs. I was afraid that getting any faster was a pipe dream. I'd need to run a 9:09 for 26.2 miles to come in under 4 and I couldn't run that for 6.2.

Last nights speed work was well work. We left from a different spot and used the available light as a guide for running time not miles. Coach Paul and Alan wanted us marathon group to run hills. We would do a mile warm up then the rest of the time at marathon speed. Am I supposed to run at the speed I want to run for CIM or the speed according to my really crappy 10k time? The run took us up into upper park (the trip up was lots of uphill on uneven surfaces) 37 minutes including our easy first mile then turn around how ever far you are and make it a negative split back (mostly down hill except for one long up hill before the lake) for 33 minutes. I got back to the parking lot at the perfect time 1 hour 10 minutes. I looked at my times, deducted the first mile and the remaining 6.5 miles was at 9:11 pace. Really darn close to the pace I was hoping for. If I did run EXACTLY 9:11 pace at the marathon that would put me at 4 hours and 36 seconds or so.

Part of my running regimen has been to incorporate a stronger core by spending an astronomical amount of money for a 6 month membership to KOR fitness. Lots of kettlebells and stretching there to make me more efficient, stronger and faster (I hope). I'm going to miss it come November when my membership is up. I'm not sure I want to give that up. My hands are all tore up today. I probably won't be able to lift my arms up to wash my hair after those clean and presses or the 6 minutes of snatches that K.C. told me not to worry about counting since I was using the 26lb bell. I can feel myself getting stronger after every single class. That will be hard to give up.

So do you train for the time you want... or by how fast you actually are now? The run felt comfortably hard once I got a good breathing pattern down, not sure if it will last 4 hours though. I guess that's why I have coaches and 11 more weeks of training to figure that out.