this workout is about right. dixon did 2 x a mile solo, i believe according to arch jelly at auckland domain on the grass. pre did a couple of 4 minute miles infront of walker and dixon after a big night drinking. i think is was 359 plus 357 or something like that.
komen and kennedy did stuff way crazier than the above..
Bob Kennedy: There is always someone to do something with. If they are at different levels, sometimes guys might do portions of the training session with you. In total we, including the Kenyans, do two to three track workouts a week.
The way Kim coaches and the way the Kenyans train, when we have a session, he will say do 5×800 meters with 2 minutes recovery. There is no time gage. Kim’s philosophy for that time of the year is to run as fast as you can and finish the session. If it is within 10 days of a major championship, he will tell me to run the workout but don’t run it any faster than 2:04. Otherwise, we’ve been out there running 1:57’s for 800 meters. Last year we did a session and it was 1600, 1200, 800, and 400, with 3 minutes between each interval, and it was myself, Daniel Komen, and Paul Koech, and the other top guys. And these are my times: I ran 3:57, 2:56, 1:55, and 55. And I was kind of in the middle of the pack. Komen ran about 3:54, 2:53, 1:54, and 55. Not many people would ever conceive of training at that speed.
http://duathlon.com/articles/215/