Middle distance interval
3 x 2,000
3 minutes rest
#1. 22 (+16), 24 (+14), 26 (+12), 28 (+10)
#2. 22 (+14), 24 (+12), 26 (+10), 28 (+8)
#3. 22 (+14), 24 (+12), 26 (+10), 28 (+8)
cool down
If you have time one can do 1 more 2,000 meter piece for a total of 4 pieces.