also, you have to take a lot of things into consideration when scheduling back to back interviews including flight times/availability/weather, post-interview dinners, how important that program is to you. For example, I had an interview at Iowa on a Friday and an interview at NYEE on a Saturday (the days may be wrong but they were on consecutive days). Nevertheless, Iowa's interview day is long and the only way to schedule a flight out of Iowa to NYC was to take a red eye through chicago. In any case, I ended up cancelling my Iowa interview, after a lot of thought, because it was just goinig to be too much. You have to remember, that you can have 20 interviews but if you're too tired to give it your A+ interview skilz, you'll prob. match but maybe not at your most sought after residency program.
However, you will have to schedule some consecutive interviews in different cities and just have to cross your fingers that the weather will comply and you'll have enough rest to remember that your in LA not Minneapolis.
In any case, good luck and don't sweat too much in the upcoming months. Interviews will come and scheduling will be a bitch, but at least it will be done by dec. 17.