The purpose of this study was to focus on the participants of Tainan Ancient Capital International Marathon and to discuss their experiential value of sports tourism for the sport event participation. Factor analysis, t-test and One-way ANOVA were exercised in this study. The results revealed that the demographic data of most participants was at age of 31-40, single, male, college graduate, working in business industry, reside in Middle of Taiwan, raced less than 3 times. With regards to the tourism arrangement, most participants would visit historic spots, secondly enjoy local famous and delicious cuisine and shop for specialty goods and food. As to “service excellence” and “consumer return on investment”, runners graduated from college were better than those graduated from graduate schools. As to “service excellence”, “consumer return on investment”, “aesthetics” and “playfulness”, participants whose monthly income below 30,000 were superior to participants whose monthly income between 30,000 to 50,000 and 50,001 to 70,000; participants raced less than 3 times were also greater than raced between 4 to 6 times and 7 to 9 times. It is suggested that the event host make early publication and promotion for the event. Posters, publication flyers or souvenirs shall be renewed each year. It will be great to accommodate a live TV wall broadcasting. In order to create amazing experience for participants every year, different sightseeing spots can be arranged along the racing routes.