What work outs are good for a sprinter, w/2 months left before track and field starts?

Im a very good track and field sprinter and i sprint short distance. We are starting first w/indoor track and field. My best event is the 55 meter dash, the 4x160 and 4x80(we all run half a lap) & this is high school track and field. I ran x-country hoping 2 get some endurance, but after that was over i did no running on my own, AT ALL! so now we are going to have open track where we can come & sprint/run whatever we want. I have 2 months left before the season starts. & im wondering what kind of workouts i should start doing since some girls have already started 2 run. oh, yeah, the season starts in January. Im one of the best sprinters in my school & im scared that the other girls will beat me, PPPLLLLLLLEEEEEEEEEEEEAAAAAs... help!!!!!!!!!!!!!!