Go Sub 2:40 This marathon plan is for seasoned runners looking to make a breakthrough. There are optional double days within the week. There are a variety of paces to be aware of throughout the plan, so it's important that you have a good understanding of these paces. Easy run pace 7:00 - 7:45 Goal Marathon Pace 6:06 Half Marathon Pace / Threshold (will be very similar) 5:47 - 5:50 10K Pace 5:34 5K Pace 5:22 3K Pace 5:10 The first half of the plan is about building out your threshold pace ...