A while back I decided not to be stuck on the traditional 7 day (1 week) training cycle and have decided that 3 days fits me much better. I've started to follow the schedule below:
Day 1: Quality/Hard Workout
Day 2: 10-15k recovery run
Day 3: 15-20k easy run
repeat
Every day I also get in a easy secondary run of 5-10k.
This allows me to properly stress my body and then allows 2 days for my body to sufficiently recover before stressing it again.
I alternate 3 types of Quality/Hard Days:
1) Lactate Threshold Work - such as a tempo run or repeat 1600's or 3200's with short rest between them (20% of run time).
2) VO2 Max Work - such as repeats of between 800m and 1600m with half distance jog between them.
3) Marathon Work - such as long runs with the last half @ marathon pace or long progression runs working down to marathon pace.
I have found that this type of schedule allows me to race pretty effectively from 10k to the marathon (half marathon being the sweet spot) with proper tapers and recoveries.
As a longer distance guy (10k to marathon) I'm not a big believer in seasonal cycling (i.e traditional: base, strengthening, sharpening, peak) used by shorter racers but rather strive for a consistent sustainable work load (i.e Shorter or Rodgers) and gradual progress while occassionaly adding timely recovery breaks (usually a couple of weeks of just light jogging after a marathon).
Anyone else out there ignoring the traditional 7 day cycle and doing something similar to what I have outlined above?