Welcome! › Forums › Running Forum › racing without the watch in the longer events(marathon and half marathon) › Re: Re: racing without the watch in the longer events(marathon and half marathon)
GTF hit the nail on the head. You have to know not just that you feel good but how good you should feel. Sure, in a marathon, you will feel good in the early miles even if you're going too fast. That's why you have to know that the early miles should feel ridiculously slow and easy. You should still feel good at miles 10-15 and only start feeling a bit taxed somewhere around miles 15-20. You should still feel under control from 20-22, then it should only start feeling difficult with a few miles to go.
Of course, your mileage may vary but the key isn't just that you should feel good in the early miles. It's knowing how good you should feel at various stages. This, as GTF mentioned, comes through preparation. This is also something that holds true for all race distances, not just the longer races. Even in a 5k, you should know how good or how hard it should feel at different points, not just that it's going to feel difficult by mile 2 but how difficult it should feel.