, you obviously need to use the track for your speed sessions. Substitute a pyramid session (800-1000-1200-1000-800m) at 10K pace or faster for the routine on Day 2. Your PBs await...

5K pace, in sessions like these:15 x 400m at 5K pace, with a recovery time of 60 seconds.5 x (800m with 2 minutes rest, then 400m with 1 minute rest) at 5K pace.6-8 x 1000m at your 10K pace, with 2-minute recoveries.4-6 x 1 mile at your 10K pace

10-12M steadyWEEK 9 5M easy 5M, inc 16 x 1 min fast, 1 min slow Warm up, then 2 x 2M (approx), timed, at threshold pace 5-6M easy Rest or 3M jog 1M easy, then 4-5M fairly fast, then 1M jog 10M steadyWEEK 10 5M easy 6-7M at a comfortable pace Warm up

.Wilson: There is no single session. You need a balance, as I have suggested above.Spedding: I never like pulling out one session, but I suppose the 3 x 1M or 6 x 800m, faster than race pace, is the most useful.Anderson: There are two possibilities – a 5K race run in about 19:16