Well done LizzyB
Our coach suggested the 400s as a way to improve 10k times. He said to start with 12, then 16, then 20 then 25 (equivalent to a 10k.
As I did 16x 400s back in March I thought I'd pick up at 20.
He said to do them at 4 secs per lap quicker than 10k pace. I put 10k pace at 35mins, or 2100 secs which over 25 laps is 84 secs per lap. So 4 secs off this is 80 secs per lap. 100m / 45 secs jog recovery was advised.
So armed with these stats I set off...
Started with a 79.3 and 79.2, then
75.8
77.4
77.2
78.0
78.0
80.0 (thought I'd blown it)
76.8
78.3
78.4
78.2
78.3
79.7 (desperately need the toilet)
79.4 (ditto)
79.3 (ditto)
79.5 (ditto)
80.2 (something that rhymes with above so longer recovery by 35 secs)
79.2
Legs like jelly near the end, just as it should be. Only 2 laps outside target and might have been able to be a bit quicker at then end without stomach problems.
Average 78.57 secs per lap. Not bad as there was a stiff breeze on the home stretch.
Might go for a short recovery run tonight, might not as I've a 2hr run planned for tomorrow.