Summarize this article:

The race starts at 5 am, so it's important to get there early. It's important to know the marathon route, as all streets are closed overnight and re-opened during certain hours throughout the day. Avoid thinking and concentrating on running like it's the only thing on your mind. There are lots of Pacific Ocean sights over Kalanianaole Highway and Diamond Head, so take a breath and enjoy the views. Take advantage of any water cups or sponges as you move along. Even if it's throwing the water on your hair or the back of your shirt, you will feel better and more energized. The marathon doubles up along Kalanianaole Highway, so cheer on encouragement to those on the other side of the road. There is a lot of Aloha spirit and even if it's cheering on a Japanese participant, everyone has fun.

Summary:
Arrive at Ala Moana Beach Park. Take in the views. Hydrate yourself at all times. Cheer on others.