Speed my steps along your path, according to your will.
HobbyJogger & HobbyRacer
It's a 5k. It hurt like hell...then I tried to pick it up. The end.
so if you've just done 18 or 20 for the first time, you might want to baby the 2nd day after a bit.
San Francisco - 7/29/12
Warrior Dash Ohio II - 8/26/12
Chicago - 10/7/12
A Saucy Wench
I have become Death, the destroyer of electronic gadgets
"When I got too tired to run anymore I just pretended I wasnt tired and kept running anyway" - dd, age 7
Prince of Fatness
Your plan looks OK. Some may say that running 19 and then 20 on consecutive weekends is not a good idea. See how you feel. Also I'd maybe do more than 12 on the in between weeks. Better yet, shoot for a time goal on those weeks, something like 2 hours.
TMy concern was that I'm already at about 37-39 mpw and I'd only be getitng to about 50 byt the end of the program. That will be a useful way to add more miles by going for a time goal.
EGH3, I peaked out at 50 MPW for my 2nd marathon back in October and was hoping for 3:45 or better so I know it can be done. For me, the biggest confidence builder was a few faster finish long runs at the 18 and even 20 mile distances. I probably over did it a little and ended up having to use my taper to heal up a little before the race but the MP miles at the end of long runs payed big benefits.