We're just a few days away from the Honolulu Marathon, which has a unique set up.

Unlike other marathons, the Honolulu Marathon allows people to finish at their own pace. 

Over half of the participants take more than six hours -- which most people agree encourages everyone to finish the regardless of how long it takes.

"I think part of the reason, way back when, is there is a number of  people who had heart problems, or even heart attacks, -- so the idea was to demonstrate that people who even had serious physical problems could still complete a marathon," said Jim Barahal, Honolulu Marathon President & CEO. "As time went on, it became incredibly important to the Honolulu Marathon as a business and economic we bring to Honolulu cause most marathons have a time limit."

The race is coming up fast -- it starts at Sunday at 5 a.m.