Posted: 25/05/2016 at 18:21
Take your long runs slowly...it sounds to me that you might be doing them too quick if you are going at the same pace as shorter runs.
have you looked at some training plans?
if you want to speed up your race pace (which will be faster than your long run pace), speed training is needed. I agree with the advice already given.
personally, if this is your first half marathon, I would concentrate on increasing the long runs rather than speed.
you've got plenty of time to train and it is completely manageable.
I'd increas your long run (slowly remember!) by a mile one week, and week two, and then have the third week reduce your long run, and continue to build up like that.
once you know you can do the distance, I would work on speed.