Hi Nic, did my rfl yesterday, know what you mean about shin splints they are agony. A couple of tips that helped me, Rest for 3 days I know its not what you want to hear but you will really feel the difference, take ibuprofen before the race it will keep the pain and swelling down, build your running up gradually each run should be no more than 10% harder or longer than the previous and invest in some proper trainers. I got mine from HE RUNS SHE RUNS, I was in there about 45 mins but my trainers are fantastic although they cost me about £80 (never mind). Hope this helps, only know all this cos my o/h did london marathon this year and spent months trying to get me to train!!