<p>Shock attenuation property of sports surfaces is especially important not only for the athlete’s performance but also for injury prevention. To evaluate the properties of the sports surfaces, some sport governing bodies often adopt friction tests and shock attenuation tests to determine the horizontal and vertical characteristics, respectively. Although the diagonal impacts are often observed in athletic sports, shock attenuation test treats only the vertical impact test. Therefore, we developed a two-dimensional impact test device for examining the two-dimensional cushioning characteristics of sports surfaces in previous studies. To produce a simultaneous two-dimensional force against a test specimen, we incorporated a parallelogram linkage in the measuring system. In this study, impact tests were conducted using spike pins for long-distance running race, assuming the actual use of sports surfaces. The test specimens were three types of urethane materials with different hardness. Five different initial impact angles and seven drop height impact tests were performed to each specimen. Two-dimensional impact force and acceleration were obtained from two load cells and an accelerometer, and deformation was calculated from acceleration by time integration. According to the impact force and deformation waveforms, it was confirmed that the shock attenuation in the horizontal direction does not depend on that of vertical direction. In addition, focusing on the maximum deformation of each surface, the difference between specimens were observed in two-dimensional shock attenuation as well. From these results, it is inappropriate to consider only the vertical direction when evaluating the shock attenuation performance, and the evaluation of the shock attenuation in the horizontal direction should also be considered.</p>