That's an interesting link you posted, Grant. I was running 5 days a week training for the half marathon earlier this year and it was hard because of work and family and it often felt like I wasn't resting properly and I also sustained some injuries as the weekly mileage ramped up. I recently ran a 10k on a 4 days a week training plan and discovered that training one less day a week hasn't had any effect on my running on race day and I never picked up any injuries. I just feel like I run easier and more comfy on the longer Sunday runs if I've done less during the week.
Technium - good luck with your plans, I haven't got the nerve to enter the big one yet! Got a couple more 10k's to do this Autumn so far, then I'm hoping to do another couple of half marathons and as many 10'ks as I can manage next year first, then I may think about it
