The company, owned by Wang Jianlin, one of China’s richest people, has added the Rock ’n’ Roll Marathon series to its leisure and lifestyle portfolio by acquiring Competitor Group Inc. and transforming the American-based Ironman company into one of the largest endurance sports organizations in the world. Since Dalian Wanda bought Ironman in 2015 for $650 million, the company has been on a buying spree in outdoor sports like marathons, road cycling and mountain bike races. The Wanda Sports arm of Dalian Wanda already owns or operates more than 20 running races worldwide, including the Singapore Marathon, the Auckland Marathon and Marathon Bordeaux.