Best sports bra for half marathon?? :)?!

Hey guys! :) I am a 15 year old girl, and I wear a 34C. I am training for a half marathon in June, and so I need to buy a good sports bra to train with. I was wondering if you guys have any favorites! :) I need something that has SOME padding (not too much, but I don't want it to be like really thin material either). I REALLY love the sports bra's that are long, like the ones that, instead of there being a band right below your boobs, it is like down on your ribs (one that I can wear while running outside in the summer). Anyways, if you guys have any suggestions, that would be great! :) Thanks! :)