Running and register marriage/ court marriage procedure

Hi me and my girlfriend are of legal age to marry. We are in a relationship from past 4years. But now we have decided to marry. Her parents are against this and my parents are supporting me. So please tell me process and procedure for running away and marrying. Court marriage and everything else about it. This would really help me a lot.

its very easy to marry with your lover. if you decided to court marriage, 1stly girl age should be 18 years and boy age should be 21. but you parents aggre then you can marry in temple also.