200m has relatively little significance to 10K or half-marathon speed, we suggest you run the 200m repetitions as you feel, rather than to a suggested time.800m RepetitionsThis is a good range of sessions between the 400m and mile, and the speed

session: Repetition 400m 800m 1200m 1600m 1200m 800m 400mPace Mile pace 5K pace 10K pace 10M pace 5M pace 3K pace 1000m paceRecovery 100m 200m 300m 400m 300m 200mBest 10K (/400m)              35 (84.0) 72 2:40 4:12 5:40 4:06 2:30 7040 (96.0) 83 3:03 4

for variety - try mixing them into a single session.   Standard Strength SpeedRepetition 4 x mile 6 x mile 3 x mileRecovery 400m jog/3 mins 200m jog/60 secs 800m jog/5 minsBest 10K (/mile)      35 (5:36) 5:25 5:30-5:36 5:1540 (6:24) 6:15 6:20-6:24 6:0045 (7

could just run to an approximately equivalent time (eg 90 seconds instead of 400m, three minutes for 800m, or six minutes for a mile). Run evenlyApart from dedication, the key to speedwork is consistency. It is more important to put together a full set

cool-down 60 mins easy 40 mins, including 10 mins at half-marathon pace (7:00 - 7:15) 30 mins easy or rest Heckington 10 Cross-trainingWeek 2 (w/c July 28) 30 mins easy or rest 10 mins warm-up, then 6 x 800m at 10K pace (6:30 - 7:00) with 2-min