Sports

Cycling Calories Burned

Q: Is it true that biking burns fewer calories than running?

**At the same relative intensity, running burns ~10–15% more**. But in cycling you can sustain effort **longer** (3–6h on road) vs. running (1–3h). Result: on a long bike ride you can surpass total burn of a run. Plus, cycling has **zero joint impact**, key if you have injuries or lots of weight to lose.

Q: What speed burns fat?

Between **60–75% of your max HR** (Z2), which is usually **22–28 km/h flat** for trained recreational cyclists, and **16–22 km/h** for beginners. In that range the body oxidizes **fats as main fuel**. With a power meter: range 55–75% of your FTP. More intense already burns mainly glycogen.

Q: Does spinning burn the same as road riding?

**Similar, slightly different**. Spinning (MET 8.5) is controlled training without pauses: can burn more per minute than an outdoor ride with lights and breaks. **Road** has volume advantage (easy to do 3h) and variety. Both real burn: 600–800 kcal/h for a 75 kg person at moderate-high intensity.

Q: Does MTB burn more than road cycling?

**Yes, 20–40% more** at the same time. Technical MTB demands **arms, core, back** constantly (keeping the bike on rough terrain), has **technical climbs and descents** (high-intensity pulses), and is usually done at lower speed but higher HR. An intermediate MTB (14 MET) matches road race cycling (15.8 MET).

Q: How long do I need to pedal to burn 500 kcal?

For a 75 kg person: - **Leisure (14 km/h)**: ~110 min. - **Moderate (21 km/h)**: ~50 min. - **Vigorous (24 km/h)**: ~38 min. - **Intense spinning**: ~45 min. - **Technical MTB**: ~27 min. Time drops linearly with intensity. For daily targets of 500+ kcal, an intense 45–60 min session does it.

Q: Does fasted cycling burn more fat?

**In theory yes**, because with low glycogen stores the body oxidizes more fat. In practice, the extra effect is small (5–10%) and increases **risk of bonking on long rides**. Optimal: do **rides up to 90 min fasted in Z2**, and **fuel before rides > 90 min**. It's no miracle; **total daily caloric deficit** is what matters most.

Q: How much does my bike weigh and how does it affect burn?

**Road bike**: 7-10 kg (carbon), 9-12 kg (aluminum). **MTB**: 10-15 kg. **Gravel**: 9-11 kg. Losing 1 kg off the bike is **less efficient than losing 1 kg of body weight** for climbing. Rule: first lose body fat, then invest in a lighter bike. For calorie burn on flat, bike weight has little impact.

Q: Are bike computer calorie estimates accurate?

**Estimates**. Without a power meter, they use HR data + statistical formulas (typical error ±15%). **With a power meter** (Favero Assioma, Garmin Rally, Stages), kcal estimation is much more accurate (±5%) because they measure real work produced. For those wanting a useful number, a power meter is the best investment.

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Cycling is one of the most versatile sports for burning calories: you can choose from a leisure ride (MET 3.5, ~220 kcal/h) to intense competition (MET 15.8, ~1,000 kcal/h in a 75 kg cyclist). This calculator uses official values from the Ainsworth Compendium 2011 to estimate burn based on your chosen intensity. It also returns approximate km covered based on the speed range selected. Useful for planning training by goal (aerobic base, fat burn, strength), comparing cycling with other sports, or estimating burn for a Sunday 3-hour ride or 45 min of spinning.

Last reviewed: May 12, 2026 Verified by Hacé Cuentas Team Source: Ainsworth Compendium 2011, UCI — Union Cycliste Internationale 100% private

When to use this calculator

Estimate burn for a 3-hour road ride.
Compare indoor spinning vs. real outdoor ride.
Calculate burn for a technical MTB session.
Plan caloric deficit with 4 sessions/week on the bike.
Compare cycling with other sports (running, swimming).

Example: 75 kg person pedaling moderate 90 min

Weight: 75 kg.
Intensity: moderate at 20 km/h (MET 7.5).
Duration: 90 minutes.
kcal/min: (7.5 × 3.5 × 75) / 200 = 9.84 kcal/min.
Total: 9.84 × 90 = 886 kcal.
Estimated distance: 20 km/h × 1.5 h = 30 km.

Result: 90 min at moderate pace (20 km/h) burn 886 kcal and cover ~30 km. Equivalent to two slices of pizza.

How it works

2 min read

Standard MET Formula

kcal = (MET × 3.5 × weight in kg / 200) × minutes

MET = Metabolic Equivalent of Task. 1 MET = energy consumed at rest. Moderate cycling = 7.5 MET = 7.5x rest.

Cycling MET Table (Ainsworth 2011)

Intensity	MET	approx km/h (mph)
Leisure (< 16 km/h)	3.5	14 (9)
Easy (16-19 km/h)	5.8	17 (11)
Moderate (19-22 km/h)	7.5	21 (13)
Vigorous (22-26 km/h)	10.0	24 (15)
Pack racing (26-30 km/h)	12.0	28 (17)
Competition (>30 km/h)	15.8	32+ (20+)
Spinning/indoor high intensity	8.5	N/A
MTB easy	8.5	15 (9)
MTB technical/intense	14.0	20 (12)

Factors That Modify Burn

Body Weight

More weight means more calories for any intensity. A 90 kg cyclist burns 20% more than a 75 kg cyclist at the same pace.

Terrain

Flat: standard MET from the table.
Rolling: add 20–30% (higher intensity pulses on climbs).
Mountainous: add 40–60% (climbs can be 15 MET during long ramps).
Free descent: drops to 3–5 MET (little pedaling).

Wind

Strong headwind (30 km/h): can add 30–40% to burn.
Tailwind: subtracts 10–20%.

Bike and Equipment Weight

Bike + gear +20 kg (44 lb) (backpack with clothes, tools) adds to burn. In technical MTB, extra weight amplifies difficulty.

Cycling to Burn Fat

Z2 Strategy (aerobic base)

Long rides of 2–4 hours at moderate intensity (HR Z2, 65–75% of max HR) maximize fat use as fuel. Typical speed: 25–28 km/h on flat road for trained cyclists.

HIIT Strategy

Short high-intensity sessions (Z4–Z5): 5 × 4 min at FTP + 2 min easy. Total 40–50 min. High burn during + elevated EPOC (afterburn) extending burn 6–12 hours post.

Optimal Combination (polarized)

80% volume in Z2 (long base rides) + 20% in Z4–Z5 (intervals). Works for losing fat and gaining performance simultaneously.

Cycling vs. Other Sports (75 kg person, 1 hour)

Activity	Approximate kcal
Leisure cycling (14 km/h)	275
Moderate cycling (21 km/h)	590
Pack cycling (28 km/h)	945
Competition cycling (>30 km/h)	1,245
Running 10 km/h (6.2 mph)	770
Running 12 km/h (7.5 mph)	905
Moderate crawl swimming	655
Intense spinning	670
Technical MTB	1,100

Spinning vs. Outdoor Ride

Spinning (MET 8.5): controlled, constant training. Ideal for beginners, bad weather, or time efficiency. 45–60 min used well.

Outdoor cycling: similar burn but with variations (rest on descents, stops at lights, wind). Usually more enjoyable, better for head and vitamin D.

Practical Tips

1. Power meter: if you're training seriously, a watts sensor gives much more accurate feedback than a heart monitor.
2. Hydration: on rides > 1h, 500–750 ml of water + electrolytes per hour.
3. Fueling: on rides > 90 min, 30–60 g of CHO per hour (gel or bar).
4. Padded shorts: essential for rides > 45 min.

Frequently asked questions

Is it true that biking burns fewer calories than running?

At the same relative intensity, running burns ~10–15% more. But in cycling you can sustain effort longer (3–6h on road) vs. running (1–3h). Result: on a long bike ride you can surpass total burn of a run. Plus, cycling has zero joint impact, key if you have injuries or lots of weight to lose.

What speed burns fat?

Between 60–75% of your max HR (Z2), which is usually 22–28 km/h flat for trained recreational cyclists, and 16–22 km/h for beginners. In that range the body oxidizes fats as main fuel. With a power meter: range 55–75% of your FTP. More intense already burns mainly glycogen.

Does spinning burn the same as road riding?

Similar, slightly different. Spinning (MET 8.5) is controlled training without pauses: can burn more per minute than an outdoor ride with lights and breaks. Road has volume advantage (easy to do 3h) and variety. Both real burn: 600–800 kcal/h for a 75 kg person at moderate-high intensity.

Does MTB burn more than road cycling?

Yes, 20–40% more at the same time. Technical MTB demands arms, core, back constantly (keeping the bike on rough terrain), has technical climbs and descents (high-intensity pulses), and is usually done at lower speed but higher HR. An intermediate MTB (14 MET) matches road race cycling (15.8 MET).

How long do I need to pedal to burn 500 kcal?

For a 75 kg person:

Leisure (14 km/h): ~110 min.

Moderate (21 km/h): ~50 min.

Vigorous (24 km/h): ~38 min.

Intense spinning: ~45 min.

Technical MTB: ~27 min.

Time drops linearly with intensity. For daily targets of 500+ kcal, an intense 45–60 min session does it.

Does fasted cycling burn more fat?

In theory yes, because with low glycogen stores the body oxidizes more fat. In practice, the extra effect is small (5–10%) and increases risk of bonking on long rides. Optimal: do rides up to 90 min fasted in Z2, and fuel before rides > 90 min. It's no miracle; total daily caloric deficit is what matters most.

How much does my bike weigh and how does it affect burn?

Road bike: 7-10 kg (carbon), 9-12 kg (aluminum). MTB: 10-15 kg. Gravel: 9-11 kg. Losing 1 kg off the bike is less efficient than losing 1 kg of body weight for climbing. Rule: first lose body fat, then invest in a lighter bike. For calorie burn on flat, bike weight has little impact.

Are bike computer calorie estimates accurate?

Estimates. Without a power meter, they use HR data + statistical formulas (typical error ±15%). With a power meter (Favero Assioma, Garmin Rally, Stages), kcal estimation is much more accurate (±5%) because they measure real work produced. For those wanting a useful number, a power meter is the best investment.