Posted: 06/09/2012 at 19:10
According to the website the course is fast so that means flat, also from what you say you are doing 9.5m in 1 hr 46, on hills.
keep slowly increasing distance but only once a week do more than 10m, on other runs do fartlek (speed play) warm up as usual for half mile or so then run faster fo a bit then ease off, get your breath back and do it again. finish off with half mile cool down. Also keep up with the hills, they are classed as sprinting in disguise. Forget gels and drinks, all hype, just stay well hydrated and eat a bannana or jelly babies.
I would guess that you are looking at a 2 hr half which is a great starting point. Above all enjoy your running.
On the day start slow, dont get sucked into setting off fast with the others, about 6m in start to increase speed slightly and you will be overtaking all the mad hares, very motivating for you, If you feel good in last mile really start to stretch yourself. You will be certain of a PB so make sure you enjoy the day and look towards the next challenge.