Today I realized how much my cardio sucks. I used to run about 5k three times a week in addition to lifting. I took the running portion more seriously than lifting, so I was routinely breaking 26 minutes (not great for a lot of people, but I didn't start to get into shape until the end of college, so I was happy with it). In the last few years though, I've focused on lifting more and started running less until eventually I was combining cardio on the elliptical with core days. But for Father's Day, my brother decided to sign up himself, my dad, mom, and sister for a 5k in September, so I've been "training" for that. And yeah, I'm hovering around 30 minutes right now after 3-4 sessions.
So my question is, what's the best way to improve my pace? I know of C25k, but the running for extended periods of time isn't my problem, it's pushing myself a little harder. Also, I typically go around 5:30-6am, so what should good nutrition the night before/morning of look like? I feel like an apple and coffee as I do for lifting isn't enough or appropriate.