TOKYO, Feb 8, 2018 - (ACN Newswire) - TANAKA HOLDINGS Co., Ltd. (Head office: Chiyoda-ku, Tokyo; Representative Director and CEO: Akira Tanae) will produce and donate gold, silver, and bronze medals to the top three men and women finishers of the marathon and wheelchair marathon events of the Tokyo Marathon 2018 (a total of 12 medals). The Tokyo Marathon 2018, organized by the Tokyo Marathon Foundation, will be held on February 25, 2018. The wheelchair marathon has been officially sanctioned as an international event since 2016. The medals to be presented to the marathon winners are approximately 65 mm in diameter and 3 mm thick. The pure gold medal weighs approximately 200 grams, the pure silver medal 110 grams, and the pure bronze medal 90 grams. TANAKA is also holding a Tokyo Marathon Winner and Finisher Medal Exhibition at its GINZA TANAKA main store in Ginza, Tokyo, from February 2 to 12, 2018. TANAKA HOLDINGS is actively supporting the Tokyo Marathon 2018 with the provision of medals recognizing the efforts of the marathon runners and by holding this exhibition.