Running shoes are designed to help protect our bodies from the impact force of each footfall. These forces are proportional to a runner's weight, so a 15-stone person, for example, produces 50 per cent more force with each running stride than

You have to pity race organisers. They go to great pains to have someone ride round their course measuring it with a Jones-Oerth counter, then 200 runners turn up wearing wrist-mounted GPS computers and claim the route is 300 metres too long. Speed

linked to a wristwatch was the first to introduce satellite-linked GPS as a means of tracking speed and distance on a runner. Its latest edition is a cosmetic upgrade of that original: the receiver is squarer and more compact and the watch now follows

not offer the support a runner needs because it doesn't properly wrap and support the foot. Improper fit can even lead to plantar fasciitis. Fit tip Not only does your foot slightly lengthen as it hits the ground with each stride, it also spreads out, so

(JBSurrey)In Short: A must have for the serious runner!Strengths:Comfortable and simple design, very accurate data, instantaneous downloading and the ablilty to not only display your runs on a map or Google Earth but to analyse your performance in depth