by Brett Larner Championship ekiden season has come and gone, but Sunday saw high-level action at two popular and long-running ekidens at opposite ends of Japan. In western Japan, course record-setting 2015 National High School Ekiden champion Sera H.S. of Hiroshima definitively took the win at the 79th Chugoku Yamaguchi Ekiden , beating Mazda , Chugoku Denryoku , JFE Steel , Chudenko and other corporate team competition with ease. Sera third-year Paul Kamais opened a lead of over two minutes with a course record 42:04 for the 15.1 km First Stage, and from there Sera never lost the top position. Mazda came the closest, closing to within 3 seconds by the end of the Fourth Stage, but a Fifth Stage win by Sera's Taiju Nakashima put them back out front with a margin that Sera's remaining two runners held onto until the end. Sera covered the seven-stage, 84.4 km course in 4:07:29, the best-ever by a high school team, with Mazda ending up nearly two minutes back ...