My key target for the first half of next year is the Liverpool half in March. My main question is how significant is the step up from a 10 miler to a half? I did the Llandudno 10 in November in 1:28 something, so is it reasonable to add on half an hour for the extra three miles (i.e. my training pace) and aim for sub 2hrs for the half? Or are there any extra considerations for 13 miles rather than 10.
Other potentially relevant information: I currently run between 20-25 mpw, long runs at around 9-10m, hill work or tempo runs each week and very little speedwork. My other PBs are 51 mins for 10K and 40 for 5m. My basic plan for training for the half is to gradually increase my weekly mileage to peak at about 30mpw and a couple of 13m+ long runs. I am a bit over 16 stone at the moment (pre xmas dinner) and my approach to training will always be to prioritise avoiding getting injured and not being able to run over rapid improvement.
Any advice/thoughts gratefully received. And merry christmas.