Pacr - Running pace calculator

Ever wondered which pace you actually need to run in order to achieve a sub 2h Half-Marathon? Pacr solves that issue for you, simply enter the distance and total time, hit calculate and you will know your 5:41 min/km target pace. Your trainer gave you some cryptic track workout, e.g. 600m at threshold pace of 4:21 min/km, whats that for a actual track lap? With Pacr you can configure your often used distances for which the durations will automatically always be calculated.