Thanks. Yeah, I'm kinda one paced, just keep plodding along, haha, so it will be thereabouts.
I've read a bit about carb loading, but I'm not gonna get too scientific about it. Just gonna eat more spuds, bread, pasta etc for 3 or 4 days before the marathon. That long run was useful though, learned more about needing to take more fuel on-board more regularly, so I'll be making good use of the food and drink stations on race day.