How to Train to Run Faster (Not Just Farther)
Sometimes I feel like my running career has reached a dead end. Well, not my career, but my pace . I lace up my shoes four or five times a week, push myself to the point of feeling pleasantly exhausted, watch my mileage steadily increase, and then—after months of honest effort—I find myself running at the same speed as a year ago. Clearly, getting faster requires more than just effort.
I’m not alone here. It’s well known in running circles that many of us unconsciously get stuck in what coaches call the “gray zone”—an effort level that’s too high to be truly easy and too easy to achieve significant high-performance adaptations. It feels productive, but physiologically, you accumulate fatigue without achieving any significant fitness gains.
I see a lot of conflicting advice online from ” running influencers ,” usually focusing exclusively on everyone’s favorite workout: Zone 2 cardio ( and all the ambiguity that comes with it ). However, Zone 2 alone isn’t enough to break through a plateau. The best way to improve your running performance can be boiled down to this: slow down on easy days and speed up on hard ones. But to understand why, we need to delve a little deeper into how your aerobic system actually works.
What does Zone 2 mean for your runs?
If you’ve been even slightly familiar with running content over the past few years, you’ve likely heard of Zone 2 training. It’s been practically preached, and I get it—who doesn’t want to hear that less effort can yield better results? This idea has real scientific backing and is beneficial for runners who chronically overtrain. But it’s also become a buzzword, thrown around so casually that it causes confusion.
“Zone 2” is a term borrowed from the five-zone heart rate-controlled training system. For runners, this zone corresponds to an “easy pace” or “slow, long-distance pace.” The difficulty is that for most recreational runners, this pace is much slower than they think.
It’s no coincidence that the “moderate intensity” runs described above, during which you can talk, but it’ll be uncomfortable, are sometimes called “useless miles.” It’s not that these miles are useless: running is still beneficial! But if you spend most of your training at “moderate intensity” (or in Zone 3, or in the gray zone, or running “useless miles”), you’ll struggle to increase your speed. To achieve sufficient intensity and truly reach your aerobic potential, the remaining miles should be easy enough to ensure adequate recovery.
If your goal is simply to get in some cardio, you shouldn’t waste time thinking about training in Zone 2 or Zone 3. However, if you’re aiming to run faster, you first need to learn to run slower. A truly easy, low-intensity workout builds an aerobic foundation, which ultimately accelerates all movements.
How to train to run faster
This is where many runners, advised to “slow down,” make a mistake: they begin training at half-strength and wonder why they’re not making progress. Low-intensity workouts develop aerobic fitness, but they don’t raise the lactate threshold or teach the legs to extend the knees quickly. For that, real intensity is needed.
Running economy —how efficiently your body uses oxygen at a given speed—is one of the most important performance indicators. I ‘ve been testing and reviewing the Garmin Forerunner 970 for the past month, and next month I’ll be adding the HRM-600 chest heart rate monitor to it to properly test my running economy. Here are the workouts I’ll be doing to try to improve my running economy:
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Threshold running . Threshold training (often called tempo running) trains your body to sustain a comfortable, high intensity. Twenty to forty minutes of this type of exercise once a week is one of the most effective workouts for a recreational runner. It increases the pace at which lactate begins to accumulate, which, in other words, makes your “hard” workout easier over time.
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Interval training . These push your cardiovascular system to its limits. Short, intense intervals—for example, repeats of 400 to 1200 meters at a pace faster than your current 5K run—improve VO2 max and reinforce proper exercise technique under fatigue. These intervals should feel truly challenging and therefore require adequate recovery. One interval workout per week is a good start.
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Accelerations or short sprints . Accelerations are a great way to train your running speed. Adding four to six accelerations after an easy run two to three times a week is a low-risk, high-reward habit that will improve your running technique and, ultimately, your speed.
Remember that you need to train not just harder, but more effectively.
I know firsthand that training volume has a complex relationship in recreational running culture. Increasing mileage carries a certain social weight, and, of course, mileage matters. But adding mileage to chronically training in the gray zone will only exacerbate those gray zones. If your 35-mile week is moderate-intensity training, then moving up to 45 miles at moderate intensity won’t break the plateau. In fact, it will deepen it and likely put you closer to injury. The question to ask isn’t, ” How many miles am I running? ” but, ” What are each of those miles actually doing? “
Indeed, about 80% of your runs should be easy enough to talk about in full sentences. But at least once a week, you should push yourself to the limit, for example, by doing threshold exercises or interval training. Increase your mileage gradually and only when the easy days truly feel easy. Intensity , not quantity , is what matters here. Start your workout at an easy pace when needed, and go hard when the workout demands it.