A study conducted by Jerry Agrusa, a travel industry management professor at Hawaii Pacific University, found that 2009's Honolulu Marathon generated more than $100 million in spending for the fifth year in row.
Hawaii's largest sporting event, last year's marathon, held Dec. 13, hosted 23,469 total participants -- up only a couple hundred people from 2008's event -- and featured 14,402 runners and walkers from Japan.
According to the report, spending by Japanese visitors was up 5.5% year over year, and the marathon helped bring in $5.1 million in state taxes.
The race also featured 2,641 runners from the mainland, whose average length of stay for the race was 8.2 days. Estimated per-day spending among those visitors was about $155.40.
For the study, Agrusa and a group of HPU students interviewed more than 1,500 marathoners.
The Honolulu Marathon is the fifth largest in the U.S. and 10th in the world.