First marathon....

Doing a 5k on April 6, first marathon, any thoughts? Suggestions?

It is a Fight to end Homeless marathon, one of the guys who passes out the Homeless Voice down here gave me the flyer and it clicked, Show how healthy I am while also helping out people who touch a deep spot in my heart. But do not just want to do this cause of charity, I want to take it serious, need to train away.