For El Guerrouj:
"4 x 2000m in 5:10 with 2 min recovery
6 x 1000m in 2:30 with 2 min recovery
The distances of the repetitions have been standardized because his coach considers it important to set a "work rhythm" with high intensity (around 70% for him). For this reason, when El Guerrouj can not finish a certain training session, he repeats the workout the following day, instead of seeking a different solution. "
I also remember a report of him running 10X1000m in about 2:33-2:35 with the last in 2:28-2:30. Con't remember the rest though.
Also his coach cites him overtraining before the 2000 games after running 10X1000m "fast" and still wanting to do more.