I'm planning to incorporate quite a few races in my pre-marathon training, with the HMs and a 20miler being chances to do big blocks of MP, and the 10ks being ran hard as replacements for either a tempo or a VO2 max session.
My marathon is MK, so 2 weeks after VLM, and I've entered races as follows
Jan 1st - Knacker Cracker (hilly 10-12k)
Jan 6th - Tadworth 10 (hilly 10m)
3rd Feb - Chichester 10k (fast, aim to race this)
Mid Feb - Dorney HM (planning to make this a bit longer with 4-5 miles before, and then aim to do at least 10 miles at MP)
3rd March - Spitfire 20 (depends how I feel, but hopefully 14m+ @ MP)
24 March - Eastleigh 10k (flat, will race this all out)
None of these are target races, but are all just stepping stones along the way - which for me means a chance to see how my fitness is progressing and to do some training on the psychological side.
I'm still hoping to find a decent local 10k (or a 10miler) in early-mid April, so any suggestions welcomed....