I just went on my cross trainer for an hour at a resistance of 5 at an average of 160 watts, it gave me the following results: 60:39 minutes 556 calories 3.58 kilometres 2.23 miles therefore it would take me 11h 40mins to run a 26 mile marathon or 25 minutes to run 1500 meters now I'm no athlete but I'm sure even my gran can run faster than 2.23 miles an hour lol, the calories look about right, how far should I have travelled going at 160 watts for an hour, is the 160 watts reading even right hmm well I found a table on a web site stating: Activity: Running Energy consumption: 600 kcals/hr at 9 kph Ergometer effort level: 160 watts so if I'm going at 9 kilometres an hour the marathon would take me 4h 40m which sounds more realistic and with the calories almost matching too I'm going to assume that its just the distance read out that's not working. I wasn't walking I was going at a fast jog/slow run and I will be contacting Pro-Form to see why its not working lol