Caution: May exhibit obsessive behavior while training

42,194,988 millimeters.  That's how far I will be running in 136 days from now.  26.2 miles....why?  Because I am insane and I am trying to keep my sanity, of course.  While training for other races I have found I like Hal Higdon's training plans the best.  I will be modifying it a bit to take into account my upcoming relay races but, here is a rough overview of what I've got in store for me for the next 4 months: 

Week	Mon	Tue	Wed	Thu	Fri	Sat	Sun
1	Rest	3 m run	5 m pace	3 m run	Rest	8m	Cross
2	Rest	3 m run	5 m run	3 m run	Rest	9m	Cross
3	Rest	3 m run	5 m pace	3 m run	Rest	6m	Cross
4	Rest	3 m run	6 m pace	3 m run	Rest	11m	Cross
5	Rest	3 m run	6 m run	3 m run	Rest	12m	Cross
6	Rest	3 m run	6 m pace	3 m run	Rest	9m	Cross
7	Rest	4 m run	7 m pace	4 m run	Rest	14m	Cross
8	Rest	4 m run	7 m run	4 m run	Rest	15m	Cross
9	Rest	4 m run	7 m pace	4 m run	Rest	Rest	Half Marathon
10	Rest	4 m run	8 m pace	4 m run	Rest	17m	Cross
11	Rest	5 m run	8 m run	5 m run	Rest	18m	Cross
12	Rest	5 m run	8 m pace	5 m run	Rest	13m	Cross
13	Rest	5 m run	5 m pace	5 m run	Rest	19m	Cross
14	Rest	5 m run	8 m run	5 m run	Rest	12m	Cross
15	Rest	5 m run	5 m pace	5 m run	Rest	20m	Cross
16	Rest	5 m run	4 m pace	5 m run	Rest	12m	Cross
17	Rest	4 m run	3 m run	4 m run	Rest	8m	Cross
18	Rest	3 m run	2 m run	Rest	Rest	2 m	Marathon

I won't be running a half marathon.  I'll be replacing it with a relay plus another relay a month before the marathon.  I'll probably take a few extra days off after the relays as I am usually pretty sore.

My next research project will be carb-loading while running.  Your muscles and liver can store about 1,200 to 1,500 calories but the stored energy is typically completely utilized in 2 hours!  I know for a fact I won't be finishing the race in 2 hours so I am going to need some extra energy during the race.  Any seasoned marathoners have some advice for me?