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I have started taking part in the Cannon Hill Park Run (4 events) and have so far ran a PB in each event. I started at 28:13 and I'm now at 26:07, however, i am yet to run a negative split. I would like some advice on how to do this and how much I would improve if i did run a negative split.
Also, is there any type of training that I could do to help improve? I currently play squash once or twice a week and try a couple of runs in too.