I am a Teen needing help on a 1/2 Marathon?? Please Help!!?

Hey im 16 very active i play volleyball all year round. My boss at my job just offered me and amazing opportunity as a raise to go and run a 1/2 marathon in San Fran. I really want to go but i absolutely despise running. Please if you have any ideas for training or anything that would help it would be greatly appreciated. Thanks