This app allows you to quickly determine your proportional race times based on your run distance and time. Simply enter the time and distance you ran then automatically see what a proportional time would be for common race distances like 5km, 10km, 15km, 20km, 13.1 mi, and 26.2 mi. In addition, it will automatically show your min/mi, min/km, mi/hr, and km/hr.