Hawaii Honolulu Marathon generates $107.6 million in spending in 2011 By Shane Nelson / February 13, 2012 Share 1 -- The 2011 Honolulu Marathon accounted for more than $107.6 million in spending, according to a new Hawaii Pacific University study. Expenditures by marathon entrants were up about $1 million year over year, although the event’s 22,615 registered participants were nearly 200 fewer than in 2010. The report, citing numbers provided by race organizers, said that nearly 14,000 of the December marathon’s entrants traveled from Japan and another 1,350 came from the U.S. mainland. Based on interviews with more than 1,900 race participants, the report found that the average length of stay for the U.S. runners was 9.2 days, and their average daily spend was just over $165. The Honolulu Marathon is Hawaii’s largest sporting event and has generated more than $100 million in total spending seven years in a row.