Great advice for you khanivore, patience and time should get you the faster times you want. Some are obviously naturally quick when they start, and they are the ones at the front. You have probably already found you are getting quicker with the running you have already done.
I don't tend to do specific training runs, I have longer slower runs and shorter faster runs. I started with the jog/walking 5 years ago and my 1st half marathon was 2:25, Sunday I was in the 1:33's too. At my quickest I almost cracked the 90mins (but I've not given up on that target
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Edited: 20/11/2012 at 18:15