New Balance 320's, trained at 10 mi per day all year long and 15 mi/day 60 days in advance, carbohydrate loading all the time... You don't just up and decide to run 26.25 miles a day or two in advance.
New Balance 1023s (too expensive but a good ride). I've been running for only a year and despite all my pronouncements before I took it up, I've become hooked on all the details. Bottom line with a personality like Kerry's, we--unfortunately--would have heard about it ad nauseam. By the way, Edwards is on the cover of Runner's World. The cover and article were quickly torn out and tossed in the garbage.