Calories burned: Running (fast)
Tempo running at 12.9 km/h — serious burn, better fitness, bigger afterburn.
≈ 420 kcal in 30 min at 70 kg
Reviewed by the Exercise Calorie Calculator editorial team · · Method & sources
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Choose an activity, enter your weight and duration, then hitCalculate — your calories-burned estimate appears here.
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- vs. sitting
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What that equals
Estimate only — not medical advice. Actual burn varies with fitness, body composition, effort and conditions.
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Running (fast) calorie chart
Estimated kcal for running (fast) (MET 12) by session length and body weight. Values are rounded estimates.
| Duration | 50 kg | 60 kg | 70 kg | 85 kg | 100 kg |
|---|---|---|---|---|---|
| 10 min | 100 | 120 | 140 | 170 | 200 |
| 15 min | 150 | 180 | 210 | 255 | 300 |
| 20 min | 200 | 240 | 280 | 340 | 400 |
| 30 min | 300 | 360 | 420 | 510 | 600 |
| 45 min | 450 | 540 | 630 | 765 | 900 |
| 1 h | 600 | 720 | 840 | 1020 | 1200 |
| 1.5 h | 900 | 1080 | 1260 | 1530 | 1800 |
Imperial check: 154 lb ≈ 70 kg · 187 lb ≈ 85 kg · 220 lb ≈ 100 kg.
About this estimate
Running (fast) carries a MET of 12(vigorous intensity) in the Compendium of Physical Activities — the research standard for energy-cost data (source database, see also our full methodology). The calculator uses:
calories = MET × weight (kg) × hours
So for a 70 kg person, one hour of running (fast) costs about840 kcal. Effort matters: going harder, adding hills, carrying load or rushing intervals all push the real number up; breaks and easy pacing pull it down.
How to burn more
- Add intervals — 1 minute hard, 2 minutes easy — to raise average intensity.
- Extend the session gradually; an extra 10 minutes adds ~140 kcal at 70 kg.
- Combine with a second activity — see the compare tray in the calculator above.
- Keep non-exercise movement high on rest days (walking, stairs, chores).
Estimate only — not medical advice. Real-world burn depends on fitness, body composition, age, weather and terrain.
Running (fast) calorie FAQ
How many calories does running (fast) burn in 30 minutes?
For a 70 kg (154 lb) person, running (fast) burns about 420 kcal in 30 minutes at its standard intensity (MET 12). Heavier people burn more, lighter people less — the chart below shows common weights.
How many calories does running (fast) burn in an hour?
About 840 kcal for a 70 kg person at MET 12. Double the time roughly doubles the burn, assuming steady effort throughout.
What is the MET of running (fast)?
The MET (metabolic equivalent of task) of running (fast) is 12 — vigorous intensity. The formula is: calories = MET × weight(kg) × hours. Example at 70 kg: 12 × 70 × 1 h = 840 kcal.