Marathon workout - long intervals

Today I ran/walked 15 miles with 11.9 miles at marathon pace (11.00??) and faster.  I could have never done this much volume at that pace without breaking it up and staying under control.

It went like this:

AM: planned 3 x 1.7miles w/ .3miles walk/run/walk
ran a little outside then drove to fittek for the following:
1-1.7miles  in 18.47 at 134 hr, wrw 4.28
2-1.7miles in 18.32 at 136 hr , wrw 4.37
3- 1.7miles in 18.20 at 141 hr , walk 6.10 cooldown
paces were 10.54 - 11.06 per mile
total = 6.5 miles  (77 mins)

PM : planned 4 x 1.7 miles w/ .3miles walk (this one to be outside on trails, the Tergat 2 mile loop, walking the .3miles of bike path then running downhill then the uphills of trail backwards.
I started off not feeling that great in the legs.
1-walk 4.44 + 1.7 miles in 17.50 at 141 (warmup- stumbled along)
2-walk 5.00 + 1.7miles in 17.19 at 142
3-walk 5.02 + 1.7miles in 17.33 at 143
4-walk 5.00 + 1.7miles in 18.51 at 139 (getting very dark - no headlamp)
walk .5 miles in 7.50
paces were 10.10 to 11.06
total = 8.5 miles  (1h 39mins)

This was another volume workout designed to allow more MP work without getting overly tired.

Tomorrow will be a real easy day with an early meeting, which means short run then in evening going to UI b-ball game, which means no pm run.

we will see what this workout means for the marathon race I'll run at LBL but I feel in good shape, but the mental part of racing is what I lack.  The workout today helps me to get mentally tougher and it was FUN. We'll see on march 9.