A sports motion support system for running has been described by using a perceptive sportswear and a wireless mobile device, in which a trainee is given real-time auditory feedback without restraint. The wireless mobile device receives motion data from the perceptive sportswear on which hetero-core fiber optics are fastened for monitoring the body motion. Real-time feedback experiment has been performed based on the system when the trainee runs on a treadmill. The trainee was successfully given trainer voice and guiding sound to be informed the range of motion on a leg and the pace for running without constraint.