I'm doing the following.
M: cross training (40min rower or 2x10min rower and some dumbbells in between),
Tu: short intervals (20min easy, 10 to 12x30-30, 20min easy),
W: slowish run (7-8Km around 12ish Km/h),
Th: short intervals,
F: rest or cross training,
Sa: "fast" run (as fast as I can, 7.6Km) + 12.5Km recuperation (slow as hell),
Su: long run (20Km, moderate pace, 12ish Km/h).
A lot of it is fairly recent. I used to just run about 7 to 8Km as fast as I could, 6 days a week and that was it. I had been stalling for months so I-ve been trying to tweak things a little. I had actually
looked at those nike+ programs (probably the 10K version) a long time ago. Back then the variety of it was a little too much for me to process (too many different distances and speeds, was used to run roughly at the same speed and the same distance all the time). Might look it up again, but I'm a little wary of fartlek and such. I think I need more structure and more regularity. Fartleks sound a little too fuzzy for me.