Where did that run come from?

My 5 week Grandma's Marathon 'cram' may be paying off...I'm half way through and still running pretty much pain free...surprising after everything my feet have been through over the past couple of years.
Let's first start with Monday...
Monday May 30th:  Still feeling a little sore/tuckered from Saturday's 20 miler, so I went to LifeTime and sat on the bike for an hour and 45 minutes...Z2 ride in aero for at least an hour.  Core and my 'Leslie' routine and a good stretch to finish the day. 
Tuesday May 31st:  If the 5 week 'cram' pays off, I'm going to look back to THIS run as the run that put me over the top.
The plan for the day, 13 miles of easy running at 7:54-8:04 pace on the trails at Lake Elmo Park Reserve...Mile 1, 7:12...Mile 2, 7:13...and so on...6 miles in 43:30 hitting the first 10K loop in 45:10 (7:15 average).  I started loop two hoping to step back a little, but the weather was perfect, music was pumping and I felt strong with a little spring to my step.  Loop 2 Mile 1, 7:02...Mile 3 was run in 6:42 and I hit 4 miles in 28:40...6 miles in 42:02 and finished the second loop in 43:34 (7:00 average)  When I was done, I ran into a buddy and we cooled down together to finish out 13. 
I carried water with me for this run...80 degrees out and super windy over parts of the course...PowerGel at the 10K mark...yummy!
Feet felt pretty good today, more importantly, 'I' felt awesome...and if I had had more time today, I would have done a third loop and upped the ante...maybe Thursday?
I think this sets me up nicely for Grandma's...  To pace at 3:14:59, I need to be in 3:04:59 shape...can that happen in 5 weeks?
Stretched good Tuesday night...and feeling like I'm ready to rumble :)

Coach D