It's only 4 miles each way, but I also will be carting kids around to school and daycare on a regular basis. Surprising how well the hybrid (with studded tires) will pull a Chariot trailer with kids through moderate ice & snow.
I'll have to put in some longer sessions obviously, and for the next 2-3 months they're likely going to be on the trainer, in the basement. Yuck. When I'm able to get out on the roads and trails, my focus will be one part distance and one part nutrition. I plan to stop at convenience stores and fast food joints to eat what's available - it's not my usual fare, and I want see how I, um, fare.
I also believe there's an enormous mental component to this sort of event. The physical conditioning is important, but without the mental, it's for naught. Physical will get you through a 10K; physical+mental will get you through an ultramarathon. Or Trans Iowa.
If anyone's collected links to Trans Iowa recaps, and wouldn't mind posting, that would be great - I've found a few, but would appreciate more.
-Dan