Thanks to customized services, the demanding, 42.195-kilometer run of this year's Beijing Marathon on Sunday is expected to become a fun way for participants to show off their personalities.

Don't be surprised to see some odd slogans on the backs of the runners, such as "please marry me" or "catch me if you can", when the race starts on Sunday morning in Tian'anmen Square.

Participants in this year's race could apply for personalized printing on their official running vests through a mobile platform, a service provided for the first time in the race's history.