A calculator for the length, duration and average speed of the covered and remaining distance. Enter a total distance, the distance covered so far and the time you needed. Your speed, remaining distance and remaining time will be calculated. The remaining time is the time for the remaining distance if you keep your speed. The same is for the total time. If you enter a desired time (which has to be longer than the time already passed), then the speed for the remaining distance will be calculated. The units can be chosen at will.