Running 6.7 miles?

Question

I am going to start running to my high school which is 6.7 miles away. I am in football and want to get in better shape. I always use to run to my middle school which was 3 miles away and i could do that with ease. I could easily run to my high school also but i am wondering how long it might take.

I run an average 6 minute mile but i am not planing to run close to that hard just a nice steady jog.