The purpose of this study was to evaluate the canoe paddling on the flat water racing during a canoe race. It was provide the paddle install four accelerometers to measure the acceleration applied to the paddle. Experiment was done with subjects rowing 500m at the race speed and measuring acceleration of paddle and showed the following results. (1) The change of acceleration by each paddling showed same results for each subjects. On the other hand, each subjects paddling were different and showed unique change. (2) The time of one cycle of paddling got longer during the race and this showed paddling motion gradually got slower. (3) Liner acceleration didn't change much throughout a race. But angular acceleration decreased throughout a race. These resulted that paddling motion to liner direction changed less but rotary motion of paddling changed small throughout a race.