Half Marathon Pacing: The Two-Part Strategy I Give Every Athlete
Every fall I watch the same thing happen at races across Indiana. A runner goes out feeling incredible, banks a few fast early miles, and spends the last four miles of a half or full marathon fighting to hold on to a pace that's already slipping away. They didn't lose fitness in those final miles. They lost the race in the first three, and just didn't know it yet.
Here's the mental model I give every athlete I coach, whether you're chasing your first half or a Boston Qualifying time: a half or full marathon isn't one race, it's two, and they require completely different mindsets.
Part one is patience. From the gun to about 60 percent of the race, your only job is restraint. This is where fitness gets wasted, not built. You should be running a pace that feels almost too easy, because adrenaline and a fresh taper make everything feel too easy in the first third of a race. If you're checking your watch and thinking "I could go faster than this," that's exactly the sign you're pacing it correctly. Save that thought. You'll need it later.
Part two is where the race actually happens. From that 60 percent mark to the finish, your job flips from restraint to execution. This is where the training you've put in over the last several months either shows up or doesn't. If you paced part one correctly, you'll have something left to work with here, and that's where a negative or even split turns into a strong final 5K instead of a survival shuffle.
The mistake almost every runner makes is treating the whole race like part two. They start racing at mile one instead of mile eight, and by the time the real test comes, there's nothing left to answer with.
If you're in the middle of a fall marathon build right now, this is exactly the kind of thing worth practicing in your remaining long runs, not just figuring out on race morning. Run the first two thirds of your next long run at a pace that feels conservative, then let the final third get honest. That's how you train your brain to trust part one instead of racing it.
This is also where a lot of the plateau I talk about in my marathon consistency series comes from. Runners who chase maximal effort in training tend to chase it on race day too, and it costs them exactly when they can least afford it.
If you want a pacing plan built around your actual fitness and goal race, that's something we can build together inside a personalized coaching plan, or you can start with our free pace calculator to get a baseline. And if race day is close and you just need a gut check on your strategy, book a free consultation and we'll talk it through.
Run part one like you're not racing yet. Because you're not. Not until it counts.
Coach Justin
