大阪馬拉松的主題是Making the Rainbow Together，每一種顏色代表一類Charity(詳情可參考英文部份)，報名費的其中一千円是捐款。
Once upon a time, it was easy to be accepted. Even some HK runners worried about “radiation” and considered giving up the trip to run Osaka Marathon.
Osaka Marathon started in 2011. The slogan is “Making the Rainbow Together”, Each colour represents a charity theme, eg:
Red: To support your hopes to live
Orange: To assist your dreams
Yellow: To support families
Green: To conserve our natural environment
Lightblue: To provide clean water
Navy: To brighten future of children
Purple: To preserve our beautiful city
General participant runners offered donations of two units per person (@500 yen x 2 =1,000 yen) by selecting their choice of charity theme from the seven available colors at the time of entry.