My advise to you is to talk to your parents. You're willing to face the unknown by running away rather than getting your parents involved. They may get upset but will always come around to help you. Don't take away their chance by running away and dealing with your issues alone.
With that said, if they're abusive, seek professional help before running away. 1800runaway.org is your first stop or 911.
Godspeed
Godspeed