Time estimator for Marathon, Half-Marathon, 10k and 5k. This single APP shows you 4 estimations - every 3 second the screen switches between Full Marathon, Half-Marathon, 10k and 5k time estimates. It is based on the distance you covered so far (and time of course) plus the current speed (actually it is the average speed over the last 10 seconds - to exclude some random effects, like wrong read-out, or short-term slow-down or speed-up). And in case you covered already some milestones, then only valid estimates will be shown (e.g. if you are at your 12th kilometer, then only estimates for half-marathon and full-marathon will be shown). In the first few secs (before the average speed over the last 10 secs rises enough) the app will show only the current duration. The app does not take into account the 'tiredness-factor', i.e. it assumes you will manage to run at the current speed till the end of your planned distance. I plan to develop a variant of this app that would take into accoun...