- Moderate cycling (20 km/h): ~500–600 kcal/hour at 70 kg
- Intense cycling (30+ km/h): ~700–900 kcal/hour at 70 kg
- Gradient nearly doubles calorie burn compared with flat terrain
- Formula: kcal = MET × body weight (kg) × duration (h)
How many calories do you burn cycling?
Calorie burn while cycling depends on three factors: body weight, intensity and duration. All three together determine the real figure — blanket numbers that ignore these variables are worthless.
The scientific basis is the MET value (Metabolic Equivalent of Task), which expresses the energy cost of an activity relative to resting metabolism:
kcal = MET × body weight (kg) × duration (hours)
| Intensity / Speed | MET | 60 kg | 70 kg | 80 kg | 90 kg |
|---|---|---|---|---|---|
| Very easy (<16 km/h) | 4.0 | 240 | 280 | 320 | 360 |
| Easy (16–20 km/h) | 5.8 | 348 | 406 | 464 | 522 |
| Moderate (20–25 km/h) | 8.0 | 480 | 560 | 640 | 720 |
| Brisk (25–30 km/h) | 10.0 | 600 | 700 | 800 | 900 |
| Intense (30–35 km/h) | 12.0 | 720 | 840 | 960 | 1,080 |
| Very intense (35+ km/h) | 14.0+ | 840+ | 980+ | 1,120+ | 1,260+ |
Values in kcal per hour. Bold: reference values for the typical recreational rider.
How many calories do you burn in 30 minutes of cycling?
Halving the hourly values gives the 30-minute burn directly:
| Intensity | 60 kg | 70 kg | 80 kg |
|---|---|---|---|
| Easy (16–20 km/h) | ~175 kcal | ~200 kcal | ~230 kcal |
| Moderate (20–25 km/h) | ~240 kcal | ~280 kcal | ~320 kcal |
| Intense (30+ km/h) | ~360 kcal | ~420 kcal | ~480 kcal |
Why apps are often wrong: most fitness apps ignore wind resistance, road gradient and individual efficiency. For precise values you need GPX data with an elevation profile — or a power meter on the bike.
The most important factor: gradient
Gradient is the most underestimated variable. A 5% climb increases calorie burn by roughly 40–60% compared with flat terrain. At 8–10% the burn can nearly double.
| Gradient | Extra burn vs. flat | Example: 70 kg, 20 km/h |
|---|---|---|
| 0% (flat) | Baseline | ~560 kcal/h |
| 2% | +20–30% | ~680–730 kcal/h |
| 5% | +50–70% | ~840–950 kcal/h |
| 8% | +80–100% | ~1,000–1,120 kcal/h |
| 10%+ | +100–150% | ~1,120–1,400 kcal/h |
This is why mountain rides burn far more calories than fast flat loops despite the lower speed — and why a power meter or an app with an elevation profile gives much more accurate numbers than a simple speed-based estimate.
Calories burned: road bike vs. mountain bike vs. e-bike
| Bike type | Typical MET | kcal/h (70 kg, moderate) | Note |
|---|---|---|---|
| Road bike | 8–14 | 560–980 | Highest efficiency, higher speed |
| Mountain bike (trail) | 8–12 | 560–840 | More power needed on rough terrain |
| Trekking/city bike | 4–8 | 280–560 | Upright posture, more drag |
| E-bike (with assist) | 3–5 | 210–350 | Motor greatly reduces your own effort |
| E-bike (no assist) | 6–8 | 420–560 | Higher weight increases the burn |
Cycling vs. running: which burns more?
A common question: which burns more, cycling or running? The answer is nuanced:
| Activity | MET (moderate) | kcal/h (70 kg) | kcal per km |
|---|---|---|---|
| Running (10 km/h) | 10.0 | 700 | ~70 kcal/km |
| Running (12 km/h) | 12.5 | 875 | ~73 kcal/km |
| Cycling (20 km/h) | 8.0 | 560 | ~28 kcal/km |
| Cycling (30 km/h) | 12.0 | 840 | ~28 kcal/km |
Running burns almost three times as many calories per kilometre as cycling — because the rider is supported by the saddle rather than the legs. Per unit of time the values are similar at high intensity. For maximum burn per hour, running and intense cycling are comparable. For long sessions without joint impact, cycling has the clear advantage.
Is cycling good for losing belly fat?
Yes — with one important caveat. Cycling burns calories effectively and reduces body fat, including visceral belly fat (the fat around the internal organs that matters most for health). Regular endurance sessions also improve insulin sensitivity, which is directly linked to belly-fat reduction.
The caveat: targeted belly-fat loss through exercise alone (spot reduction) is not physiologically possible. Fat is mobilised evenly from all stores in the body, not just where you train. So regular cycling combined with a moderate calorie deficit in your diet is the most effective strategy.
Practical tip for weight-loss goals: at least 3 sessions of 45–60 minutes per week at moderate intensity (Zone 2, comfortable but noticeable) has the strongest effect on body fat and metabolic health. Sessions that are too short or too intense are less effective.
What happens if you cycle 20 km every day?
Cycling 20 km daily at a moderate pace (about 20 km/h, roughly 60 minutes) burns an extra 500–600 kcal a day for a 70 kg rider. Over a week that is 3,500–4,200 kcal — which, with an unchanged diet, corresponds in theory to about 500 g of fat loss per week.
Beyond calorie burn, endurance, cardiovascular health, leg strength and mental wellbeing all improve measurably within a few weeks. Important: with daily training, plan enough recovery and adjust your carbohydrate intake — if you burn 600 extra kcal a day, your nutrition has to account for it.
Fuelmetric calculates the exact calorie burn of your ride from GPX route, elevation profile, body weight and intensity — and derives your fuelling needs from it.
Calorie burn and fuelling: the connection
For endurance athletes, calorie burn is not just a number for the scale — it is the basis for your fuelling strategy. If you burn 1,500–1,800 kcal on a 3-hour ride, a large share of it from carbohydrates, you have to take in carbohydrates accordingly — otherwise you risk bonking.
Rule of thumb: on rides longer than 90 minutes, your body glycogen stores (~400–600 g, ~1,600–2,400 kcal) do not cover the total demand. You need at least 60 g of carbohydrates per hour from external sources.
Conclusion
Calorie burn while cycling ranges from 400 to 650 kcal per hour at a moderate pace — depending on body weight, intensity and, above all, gradient. Climbs and higher speeds raise the burn significantly. For precise values you need GPX data with an elevation profile. To lose weight on the bike: regular Zone 2 sessions combined with controlled nutrition is the most effective strategy.
Sources: Ainsworth et al. (2011), 2011 Compendium of Physical Activities. Jeukendrup & Wallis (2005), Measurement of substrate oxidation during exercise by means of gas exchange measurements. American College of Sports Medicine Position Stand (2009).