As many of you know Steve and I are pretty new to running. He's naturally much faster than I am and I feel like I'm slowing him down. So I'd like to work on increasing my pace but I'm having a really difficult time. I'm at the point where I really enjoy running a 12+ mile slow run at about an 11-12:30 min. mile pace but dread a 3 mile run at a 10 min. or under pace. Anything from about the 10 min. mark and under is like pure torture and I can't sustain it for more than a half mile or mile on a good day. I have a horrible time breathing and my body feels like it wants to shut down. We've been trying to push ourselves on our short runs and then slowing the pace for the long runs. Am I best to just keep pushing myself on the short runs until I improve? Am I just not built for speed? :lol: Any advice would be greatly appreciated.