This is perhaps the best article I can find on the internet about Kawauchi's training I am not a Lydiard expert so I am not sure whether it is typical Lydiard variation training (would be grateful for your insights):
http://runningtimes.com/Print.aspx?articleID=24166
The details he gives on his training are: "I average 80 miles a week with two hard workouts, one speed session and one long run on the weekend." "The rest of the days are easy. It's not really different from what other amateurs do, and since my mileage is pretty low I think most people could fit it into a normal work schedule."
I not sure what the speed session would be, km reps or how easy his easy days are ?
The article has some great quotes from Kawauchi:
"People have been telling me, 'You should do more scientific training, you should do altitude training.' I don't do any of that," he says.
"Japanese corporate runners watch their weight to within 0.1 kg. I eat whatever I like. I don't do any taping or take supplements. I don't breathe low-oxygen air. I don't wear magnetic necklaces. I guess in that way I'm old-school. I run, I work hard, and I like it. I read up, thought about what I needed to do, and found what works for me. There's no reason Americans can't do the same thing. It's worthwhile spending money on things that will help your training, but spending money itself isn't going to make you better."