Calories Burned
Running

How many calories does running burn?

Running has one of the cleanest calorie rules in all of fitness: it burns roughly 1 calorie per kilogram of body weight per kilometer. So a 70 kg runner burns about 70 calories per kilometer, which makes a 5K around 350 calories and a 10K about 700. This relationship — first measured by the physiologist Rodolfo Margaria in the 1960s and confirmed by hundreds of studies since — is the backbone of running calorie estimates.

The calculator above uses the slightly higher gross figure (~1.036 kcal/kg/km), which includes your baseline metabolism during the run, matching how fitness trackers report calories.

Calories burned running by distance and weight

Weight	Per km	5K	10K
55 kg	57 kcal	285 kcal	570 kcal
70 kg	73 kcal	363 kcal	725 kcal
85 kg	88 kcal	440 kcal	881 kcal
100 kg	104 kcal	518 kcal	1,036 kcal

Why pace barely changes the total

This surprises people: running a 5K fast or slow burns roughly the same number of calories. The reason is that the energy cost of running is tied to the distance you cover, not the speed you cover it at. Run faster and you burn the calories more quickly; run slower and you burn them over a longer time — but the total for the distance is about the same. So if calorie burn is your goal, adding distance matters far more than adding speed. (Speed still has benefits, of course — fitness, time efficiency and enjoyment.)

Running vs walking: which burns more?

Per kilometer, running clearly wins. Walking burns roughly 0.7 calories per kg per km (gross), while running burns about 1.0 — so running the same distance burns close to 40% more. Per minute the difference is even larger, because you cover more ground running. That said, walking has its own advantages: it's lower impact, easier to sustain, and accessible to almost everyone, so the "best" choice is the one you'll actually do consistently. Compare directly with our calories burned walking calculator.

Running for weight loss

Running is calorie-dense exercise: it burns a lot in relatively little time, which makes it efficient for creating an energy deficit. But two cautions apply. First, it's easy to overestimate the offset — a single pastry can wipe out a hard 5K, so diet still does the heavy lifting. Second, appetite often rises with running, so track intake honestly. Used alongside a modest calorie deficit, running is a powerful weight-loss aid; relied on alone to "earn" food, it tends to disappoint.

What the estimate can't see

The ~1 kcal/kg/km rule is robust, but real-world burn varies with terrain (hills add a lot), running economy (efficient runners use slightly less), wind, surface and fitness. Treadmill running with no incline can read a touch high versus the road. Treat the number as a strong estimate — accurate enough for planning a deficit or comparing runs, but not a precise measurement of your individual metabolism.

Calories on longer runs

The ~1 kcal/kg/km rule scales straight up to longer distances. A 70 kg runner burns about 350 calories in a 5K, 700 in a 10K, roughly 1,475 over a half marathon, and around 2,950 for a full marathon — which is why marathon training carries such a high energy demand and why fuelling matters so much on long efforts. Lighter runners burn proportionally less and heavier runners more, but the per-kilometer cost stays remarkably consistent, so you can estimate any distance just by multiplying.

Does the afterburn (EPOC) add much?

You'll hear about "afterburn" — the extra calories your body uses recovering after exercise, technically EPOC (excess post-exercise oxygen consumption). It's real, but for steady running it's modest, typically a small percentage on top of the run itself. High-intensity efforts produce a larger afterburn than easy ones, yet even then it rarely transforms the totals. Don't count on EPOC to do heavy lifting; the calories you burn during the run are what matter most, and the estimate above already captures those.

Incline, trails and treadmills

Terrain changes the picture. Uphill running raises the energy cost significantly, so hilly routes burn more than the flat-ground estimate. Trail running on soft or uneven ground also costs extra as your body works to stabilise. Treadmills, by contrast, can read slightly low versus the road because there's no air resistance and the belt assists turnover — many runners add a 1% incline to compensate. For flat road running, the standard estimate is accurate; adjust upward for hills and trails.

Running vs other cardio for calorie burn

Running is one of the most calorie-dense forms of cardio because it moves your whole body weight against gravity over distance. Per minute, it typically out-burns cycling at a casual pace and rivals or beats swimming and rowing for most people, while demanding no equipment. The trade-off is impact: running stresses joints more than low-impact options like cycling, swimming or the elliptical, which is why some people mix in those alternatives to manage load. For sheer calories per minute of accessible exercise, running is hard to beat — but the most effective cardio is, once again, the one you'll do consistently and without injury.

Fit it into your bigger picture

Calories burned running is one input into your overall energy balance. To see your total daily burn and set a calorie target, use the TDEE calculator; for your resting baseline, the BMR calculator. And to plan the runs themselves, the running pace calculator and finish time calculator pair naturally with this one.