Why people race in 2 classes.
Why do many people run in 2 classes? In a vast majority of cases it is to double the amount of race time.
3 x 5 minute qualifiers and a 5 minute main =20 min. Many people think 6 -8 hrs on the track for 20 mins is insufficient.
4 - 8 minute qualifiers and an 8 minute main gives you the same 40 minutes of track time you would get running two different classes.
--------------------------------------------------------------------------