08-08-2011, 08:13 AM
you can do the 10 x 400m at 10 seconds per km faster than the 1000m session .. so if you ran 3.40 per k average for the 1k .. you now do 3.30 per k pace for 400m
which is 84 seconds for the 400m
enjoy
TheEd
which is 84 seconds for the 400m
enjoy
TheEd