VYC Sailing Race Distance Calculator Download VYC Race Distance Calculator If you are human, leave this field blank.VYC Sailing Race Distance CalculatorDistances are calculated in Elliptical Knots using the Haversine Formula. Valid locations are identified below, each with a single letter along with their Latitude and Longitude ... enter all letters expected to be traversed to find the minimum total distance for the race ... the example provided is XAX which is 1.76 Knots Racecourse * Distance for race XAX = 1.76 Knots