Improve Running Economy: 6 Training Levers

Two runners, identical VO2max, identical anaerobic threshold — and yet one runs the marathon ten minutes faster. The difference is called running economy: how much oxygen your body burns per kilometre. It is the third major performance factor beside maximal oxygen uptake and threshold — and the one most often ignored. The good news: running economy is trainable, through six well-researched levers. Here is what economy actually measures, how much each lever delivers, and how to track your progress without a lab.

What running economy actually is

Running economy describes oxygen consumption at a given submaximal pace, expressed in millilitres of oxygen per kilogram of body weight per kilometre. Typical values range from 190 to 210 ml/kg/km — the less oxygen you need for the same kilometre, the more economically you run, and the more spared energy you can convert into pace. The rule of thumb: one percent better economy equals roughly 0.75 percent more race speed. Five percent more efficient running turns 3:45 marathon form into something around 3:37 — without VO2max or threshold moving a millimetre.

The spread is remarkable: even among runners with identical VO2max, oxygen cost differs by up to 30 percent. That is why athletes with modest lab numbers beat competitors with more impressive figures — they simply run a more fuel-efficient engine. Economy also stays surprisingly constant across a wide pace range: whether you run 5:00 or 5:30 per kilometre, the cost per kilometre barely changes. Only near the threshold and in sprints does it rise.

What drives it physiologically? Four factors decide: tendon stiffness (the more elastic energy is stored and returned, the less muscular work is needed), neuromuscular coordination (which and how many muscle fibres are recruited), biomechanics (vertical oscillation, braking impulse at foot strike, arm action) and the share of slow-twitch fibres, which use oxygen more sparingly. The training levers below act exactly on these four points.

Lever 1: Strength training and plyometrics

The best-evidenced lever of all: meta-analyses on strength training show running economy improvements of two to eight percent — around four on average. The mechanism: heavy resistance and jump training increase the stiffness of the muscle-tendon system. The Achilles and foot tendons work like springs — the stiffer the spring, the more energy returns from ground contact for free, the less the muscle has to contract actively.

• Heavy strength training: Two sessions per week with 3–5 repetitions at 80–90 % of maximum — squats, deadlifts, hip thrusts. Not to failure, but clean and explosive on the way up. Structure and exercise selection are covered in Strength Training for Runners.
• Plyometrics: Jump series with short ground-contact times — pogo hops, single-leg hops, skipping over small hurdles. Two series of 60–80 ground contacts per week are enough for measurable effects.
• Time horizon: First economy effects appear after six to ten weeks. Strength work is no competitor to running: easy mileage plus two short strength sessions beats simply running more on the same time budget.

Lever 2: Mileage and years of running

The slowest but most underestimated lever: sheer repetition. Economy improves over years of consistent running — elite runners with a decade of high mileage run measurably more economically than equally fit late starters. Thousands of strides per week groove the movement pattern, reduce co-contraction of antagonist muscles and optimise fibre recruitment. This adaptation is carried almost entirely by easy running: it is the kilometres of base training, not intervals, that do the work. Moving from 30 to 50 weekly kilometres can realistically buy you one to three percent better economy over one to two years — without changing anything else.

Lever 3: Slightly raise your cadence

Stride rate is the technique parameter with the most direct economy effect: most recreational runners move at 150–165 steps per minute, below their economical optimum. Raising cadence by five to ten percent shortens ground-contact time, lowers vertical oscillation and reduces the braking impulse at foot strike — three cost centres at once. Modesty matters: more than ten percent above your spontaneous cadence initially costs extra energy until the new rhythm settles in. Measurement methods and the reality behind the 180-SPM myth are covered in Running Cadence.

Lever 4: Sharpen technique deliberately

Radical style rebuilds are poison for economy — studies on foot-strike conversion show this clearly: runners forced from heel to forefoot strike run less economically for months. What works is small loops instead of demolition: running drills, short strides with a focus on tall posture and an active leg cycle, deliberate running on varied surfaces. These stimuli improve neuromuscular coordination without destroying the grooved base pattern. Concrete drills and dosages are in Improving Running Form. Practical rule: never change more than one technique element at a time, and test every change for at least six weeks before judging it.

Lever 5: Shoes and weight

Equipment is the only lever with an instant effect. Carbon-plated shoes with highly resilient foam lower energy cost in the lab by four percent on average — individually ranging from one to six percent. Shoe weight matters too: the research rule of thumb is that 100 grams more per shoe costs about one percent more energy. That explains why light racing shoes paid off even before the carbon era. Buying criteria and fit rules are in Buying Running Shoes.

Body weight follows similar maths: every kilogram less lowers the cost per kilometre by around one percent — but only as long as performance capacity survives. Aggressive dieting below your individual healthy range destroys more performance through low energy availability (RED-S) than the lower weight returns. Weight is the one lever you can actually turn too far.

Lever 6: Hills, strides and short sprints

Short maximal or near-maximal stimuli sharpen neuromuscular capacity without meaningful fatigue. Three proven formats:

• Strides: 4–6 × 20 seconds brisk (not all-out) after easy runs, once or twice a week. They train fast recruitment and clean mechanics while fresh.
• Hill sprints: 6–8 × 8–12 seconds steep uphill, full recovery between reps. Studies show economy effects comparable to plyometrics — with minimal metabolic load.
• Long hill runs: Steady climbs build strength endurance and an efficient stride length with low impact stress. Why climbs make you faster is explained in Hill Training.

The most common mistakes

• Radically rebuilding your running style. "Forefoot striking from now on" is the surest way to run less economically for months and wreck your calves on the side. Economy comes from fine-tuning, not demolition.
• Skipping strength work "because the legs already run". The economy effect of strength training comes via tendon stiffness and recruitment — exactly what running alone does not provide.
• Forcing cadence dogmatically. 180 steps per minute is a population average, not a law. Rigidly imposing a metronome tempo your fitness cannot carry costs you a higher heart rate.
• Reading carbon shoes as a training substitute. Four percent equipment plus four percent training are additive — if you only buy the shoe, you leave the bigger half on the table.
• Measuring progress by feel. Economy feels like nothing. Without a reference test — same route, same pace, heart-rate comparison — progress stays invisible and motivation collapses.

How Peakora trains your running economy

The six levers are not a checklist but building blocks of a plan — and that is where most runners fail: strength sessions collide with hard workouts, strides fall victim to time pressure, mileage jumps too fast. The Peakora engine anchors economy work directly in the periodisation: strength blocks sit on days where they do not compromise your quality sessions, strides are fixed after easy runs, and mileage progression follows controlled steps instead of leaps. Because the app evaluates every session by heart rate and pace, you can watch in the heart-rate trend at identical paces whether your economy is moving — the reference test above, just automatic.

Frequently asked questions about running economy

What is a good running economy?

Values around 190 to 200 millilitres of oxygen per kilogram per kilometre are considered very economical; clearly above that there is room to improve. More important than the absolute number is the trend: if your oxygen or heart-rate cost at the same pace drops, you are improving — no matter where you started.

How quickly can running economy improve?

Strength training and plyometrics show first measurable effects after six to ten weeks, typically two to four percent. Rising mileage improves economy slowly over years on top of that. Short-term jumps come almost only from equipment, such as carbon-plated shoes.

Do carbon shoes really deliver four percent?

On average yes: lab studies measure around four percent lower energy cost with carbon-plated shoes, with individual spread from one to six percent. They are a legal equipment advantage but no substitute for training — runners with good economy get more out of them too.

Can I measure running economy without a lab test?

Yes, indirectly via heart rate at a fixed reference pace: run the same flat loop at an identical pace every four to six weeks and compare average heart rate. If it drops under similar conditions, you are running more economically. Heat, caffeine and poor sleep distort the comparison.