Running faster while keeping your heart rate low might sound too good to be true—but it’s entirely possible. In fact, elite running coach Nicklas Rossner has helped countless runners improve their pace while staying in full control of their breathing and energy levels.
“Speed and control aren’t opposites,” Rossner says. “When your training is structured right, you can get significantly faster without your heart rate skyrocketing.”
Here’s how to do it—using proven science and training techniques that actually work.
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Why a Lower Heart Rate Can Make You a Better Runner
It’s a common myth that running harder always equals running better.
While high-intensity workouts do offer cardiovascular and metabolic benefits, relying on them alone often leads to burnout, injury, and frustrating plateaus. Many runners push themselves to exhaustion three times a week, expecting steady improvements—but instead end up stuck or sidelined.
By contrast, training with a lower heart rate taps into the body’s aerobic system. This allows you to run longer, recover faster, and train more frequently. Over time, these consistent, manageable sessions build the endurance engine needed for faster running.
“The best runners in the world don’t go hard every day,” Rossner explains. “They go easy most of the time so they can go hard when it counts.”
1. Find Your Optimal Cadence—It’s Not Always 180
For years, the number 180 steps per minute was considered gospel in the running community. That number originated when legendary coach Dr. Jack Daniels noticed elite runners hitting that cadence during the 1984 Olympics.
But science has since shown that this “one-size-fits-all” approach misses the mark.
In a treadmill study analyzing 12 runners at various paces (90%, 100%, and 110% of their usual speed), researchers measured heart rate and stride frequency. The result? The heart rate formed a parabolic curve in relation to cadence.
In other words, there’s a sweet spot where the heart rate is lowest. Move above or below it, and your heart starts working harder.
Interestingly, novice runners consistently chose cadences that were lower than optimal. That means many runners could lower their heart rate just by adjusting their stride frequency.
Rossner has seen this firsthand:
“Most recreational runners tend to ‘plod’ rather than glide. A small bump in cadence can dramatically improve both efficiency and comfort.”
To test your own cadence, hop on a treadmill, set up a camera, and try running at slightly different step rates. Aim to stay within the 170–180 steps per minute range if you’re running at recreational speeds.
Want a hack to hold your cadence? Create a playlist where all songs match your target BPM—then just run to the rhythm.
2. Breathe Like a Pro Runner—From the Belly, Not the Chest
Most runners breathe too shallowly or too fast—especially when things get tough. This type of breathing puts extra stress on the system and leads to faster fatigue.
Instead, aim for diaphragmatic breathing—deep breaths that expand the belly, not the chest.
“Think of your body like a bicycle tire,” Rossner says. “If there’s not enough air, you can’t go fast. If there’s too much, it bursts. The key is breathing in just enough, and exhaling fully.”
In one study, athletes who trained their breathing showed multiple benefits:
- Lower resting heart rate
- Less stress post-exercise
- Better posture and movement efficiency
For real results, practice this technique:
- Inhale deeply through the nose, letting your stomach expand
- Exhale slowly and completely—as if trying to fully empty the lungs
Rossner adds a trick from personal experience:
“Hyper-focusing on the exhale—really emptying the lungs—can calm your heart rate quickly, even mid-run. It’s something I teach all my runners.”
3. Train With Polarized Intensity for Maximum Results
Not all miles are created equal. According to a study published in the Journal of Applied Physiology, how you divide your training intensity matters just as much as how much you train.
Researchers split 30 recreational endurance runners into two training groups:
- Polarized Training Group: 77% low-intensity (Zone 1), 3% moderate (Zone 2), 20% high-intensity (Zone 3)
- Moderately High Intensity Group: 46% low, 35% moderate, 19% high
After several weeks, both groups improved their 10K times—but the polarized training group improved by 5%, while the moderately high-intensity group saw only a 3.6% improvement.
The key takeaway? Avoid the “gray zone”—that moderate intensity where you’re working hard but not hard enough to get faster, and not easy enough to recover.
“You should be able to hold a conversation on 80% of your runs,” says Rossner. “Then, when it’s time to push, your body will actually respond.”
A good rule of thumb:
- Spend most of your weekly training (about 4 out of 5 runs) at an easy, conversational pace.
- Reserve one session for speed work or intervals.
4. Get Your Easy Pace Right—Science Says Slower is Better
It’s tempting to think that if you’re not sweating buckets or gasping for air, your workout isn’t doing much. But when it comes to building endurance and speed, that couldn’t be further from the truth.
Slow running triggers a powerful set of adaptations:
- More mitochondria – the energy-producing centers of your cells
- Increased capillaries – for better oxygen delivery
- Higher myoglobin – to hold and move oxygen within muscles
These adaptations improve efficiency and stamina—two essential ingredients for running faster at any distance.
So how slow should you go?
Research shows that:
- Capillary growth peaks at 60–75% of your 5K pace
- Myoglobin and mitochondrial development peak at 55–75%
You don’t get extra benefit from running faster than 75% of your 5K pace—but you do get nearly the same benefit running as slow as 50%.
If your 5K time is 20 minutes, your slow run pace should fall between 8:00 and 9:20 per mile.
“Most people run their easy runs too hard,” Rossner warns. “But going slower builds your aerobic base, makes you more efficient, and lowers your heart rate in the long term.”
Consistency Over Hero Workouts
The best runners in the world don’t rely on gimmicks or short-term hacks. They follow consistent, science-backed training principles that deliver sustainable results.
With the right strategy—optimized cadence, smart breathing, polarized intensity, and slower long runs—any runner can build the engine that supports faster, stronger performances with a calm, steady heart.
“When you put it all together, you don’t just run faster—you feel better doing it,” Rossner says. “That’s the sweet spot every runner should aim for.”
