I'm on birth control and i run everyday at matching time, my bf and i plan to use condoms..?

if the condom breaks should i use emergency contraception? No you shouldn't.
The birth control is as good protection as you're going to get hold of and more accurate and reliable protection than the emergency contraception (emergency contraception is around 90% effective compared to the pill's 99.9%). Using condoms as ably will mean pregnancy is really, really unlikely. But within the case of a breakage yeah you can rely on the pill. You voice you know how to take it and you remember to transport it so you'll be fine.
Also I've heard it can be doomed to failure taking emergency contraception when you're on the pill. Not sure if it's true that it might not work as well, but it's possible, beside all the hormones.
If you are on the pill and the condom breaks you should not procure pregnant.