In reply to Kemics:
> So I've signed up for a half marathon in 2 weeks. Yesterday I went for a 4 mile run and have pretty sore legs. Has anyone got any tips to make the most of the little training time I have? I have good cardio from cycling and a good base of general fitness.
>
If you don't usually run, it's not surprising you've got sore legs today, and you shouldn't necessarily take it as an inevitable sign of things to come. Why did you only run 4 miles - was it because that's all you had time for, or because you felt your legs couldn't manage any more, or because you were out of breath? And how fast did you run? Do you think you could have run further if you'd run slower?
However ...
> Is this foolish? Does it take more than two weeks to train?
I'm not sure about foolish, but as has been said, it's going to hurt and you won't really do yourself justice. In two weeks, you're not really going to do much to change your fitness levels, so you need to do anything you can to get your legs used to working for however long you think it'll take you to do the run, which basically involves going running.
A lot of training programmes suggest a maximum 10% increase in weekly mileage, so from that perspective, you're stuffed. You'll get round, but you might find there are better ways of preparing for a half.