Race for a Reason Training: New here. Race for the Cure!

Hi everyone! This is my first post in the forums. I have been a member of the site for a couple weeks now. I am training to complete a half-marathon in about 9 more weeks. Along the way, I will be running in the Susan G. Komen Race for the Cure, for breast cancer. (if any of you would like to sponsor me, 100% going to charity, let me know and i'll email you about how to go about this, please do it!) My question is, any tips on competing in such a big race? It's only 5k, so I don't have to worry about eating along the way or anything, I've just never run in a big competitive race like this before and was looking for some veteran advice! Advice and donations greatly appreciated! Thank you!