This method does yield an accurate calibration for the bicycle as moved in a straight line with rider weight present. It does not replicate the way the rider actually rides when measuring the race course. The basic principle of calibration assumes that the rider will ride as he or she calibrates. Few riders would ride the course with the same degree of straightness as used in the proposed calibration method. I believe this would result in some degree of undersize in the resulting measured courses, because the resulting calibration constant would be smaller than one obtained through normal riding.