I did long distance for 4 years. I did Cross Country in the fall, indoor track in the winter and outdoor track in the fall. I did the 800 meters and the 1 mile. Tips? run a lot and learn to pace. I can't tell you anymore. My team practiced 7 days a week so we used to be #1 at my state so I guess that helps too.
Guess who the best long distance runner in the state was? A somali kid. I was really good at 800 meter but that was about it. Now some ethiopian kid broke his record and become the best long distance high school runner in my state.