How many calories does cycling burn per hour?

Calories burned depend on power output and efficiency (22–26%). At 200W, a cyclist burns approximately 716 kcal/hour. At 100W: ~358 kcal/hr. At 300W: ~1,075 kcal/hr. Compared by effort level: leisurely (80W): ~290 kcal/hr; moderate (150W): ~540 kcal/hr; hard (250W): ~895 kcal/hr.

Is cycling or running more efficient for burning calories?

Running burns more calories per unit of time at the same perceived effort due to greater muscle mass engaged and the energetic cost of impact. However, cycling can be sustained longer and at lower injury risk, resulting in more total calories burned per session. For weight loss, total energy deficit matters more than mode.

How many calories should I eat back after a long cycling ride?

The 30–50% rule is practical: replace 30–50% of calories burned during the ride if fat loss is the goal. Consuming all calories back maintains weight. For rides over 2 hours or >1,500 kcal burned, full replacement supports recovery. Prioritize carbohydrates and protein within 30–60 minutes post-ride.

Do I need to fuel during cycling rides?

For rides under 60–75 minutes at moderate intensity, no mid-ride fuel is needed. For rides over 90 minutes, consume 60–90g of carbohydrates per hour (gels, bars, bananas) to prevent glycogen depletion. Begin fueling at 30–45 minutes into the ride, not when you feel hungry (it's already too late).

Cycling Calorie Calculator

Calculate calories burned cycling based on duration, power output, and body weight. Includes on-bike fuelling recommendations.

Cycling CaloriesFuellingPower Nutrition

Section: Cycling Science
Reviewed: 2026-02-12
Your data: Stays local

Functional Threshold Power (FTP)

watts

Rider Weight

Power-to-Weight Ratio3.19 w/kg

Zone	Power Range	% FTP	Description
Zone 1: Active Recovery	< 127w	< 55%	Easy spinning. Promoting blood flow.
Zone 2: Endurance	129 - 173w	56-75%	All day pace. Fat oxidation base.
Zone 3: Tempo	175 - 207w	76-90%	Aerobic interval pace. "Sweet Spot" is high Zone 3.
Zone 4: Threshold (Lactate)	209 - 242w	91-105%	Race pace. Burning legs. 10-20 min efforts.
Zone 5: VO2 Max	244 - 276w	106-120%	3-8 min max efforts. Gasping for air.
Zone 6: Anaerobic Capacity	278 - 345w	121-150%	30s - 3 min efforts. Very painful.
Zone 7: Neuromuscular Power	> 347w	> 151%	All out sprints. < 30 seconds.

Sweet Spot Recommendation

For efficient aerobic gains, target 202w - 216w. This provides the best 'bang for your buck' increase in FTP with manageable fatigue.

The formula

Energy (kcal) = Average Power (watts) × Duration (seconds) / (4186 × Gross Efficiency)

Full derivation and the conditions it holds under are in Method and basis, below.

Method and basis

How the figure above is derived, and when not to act on it.

How Cycling Calorie Expenditure is Calculated

When you have a power meter, caloric expenditure is precise:

Energy (kcal) = Average Power (watts) × Duration (seconds) / (4186 × Gross Efficiency)

Typical gross efficiency for trained cyclists: 20–25%. At 23% efficiency:

Energy (kcal) ≈ Average Watts × Duration (hours) × 3.6 / 0.23 ≈ Watts × Hours × 15.65

Example:** 200W average for 2 hours = **200 × 2 × 15.65 ≈ 6,260 kJ ≈ 1,495 kcal

Without a power meter, speed-based estimates are used, but these carry ±15–25% error due to wind, terrain, and drafting variables.

On-Bike Fuelling Requirements

The limiting factor in cycling performance beyond ~75 minutes is glycogen depletion, not fitness. Fuelling strategy is a trainable skill.

Duration	Carbohydrate Target	Fluid Target
< 60 min	Unnecessary (mouth rinse only)	500–750 mL/h
60–90 min	30–40 g/h	500–750 mL/h
90 min – 3 hrs	60 g/h	750–1,000 mL/h
> 3 hours	90 g/h (mixed glucose + fructose)	750–1,000 mL/h

The 90 g/h ceiling** requires multiple carbohydrate transporters (glucose + fructose in a **2:1 ratio). Single-source carbohydrate (glucose only) maxes out at ~60 g/h regardless of intake.

Calories Burned by Effort Level

Intensity	Example	Approx. kcal/hour (75 kg rider)
Zone 1 (Recovery)	Easy spin	300–400 kcal
Zone 2 (Endurance)	Long ride	500–700 kcal
Zone 3 (Tempo)	Group ride pace	700–900 kcal
Zone 4 (Threshold)	Hard interval	900–1,100 kcal
Zone 5 (VO₂ Max)	VO₂ intervals	1,000–1,200 kcal

Post-Ride Recovery Fuelling

After rides exceeding 90 minutes, the priority order is: 1. Carbohydrates (within 30 min): 1–1.2 g/kg body weight per hour for first 4 hours 2. Protein (within 45 min): 20–40 g to stimulate muscle protein synthesis 3. Fluid: Replace 125–150% of sweat losses over 2–4 hours 4. Sodium: 500–1,000 mg with your recovery meal to trigger thirst and aid rehydration

Why Calorie Counting Alone Misleads Cyclists

The quality of fuel source matters as much as quantity: * Fat provides 9 kcal/g but delivers ATP too slowly for efforts above ~65% VO₂ max. * Carbohydrate provides only 4 kcal/g but fuels high-intensity work at rates 3× faster than fat oxidation. * Training in Zone 2 increases fat oxidation rates, which spares glycogen for hard efforts — this is why "base miles" matter even for criterium racers.

WinSport Editorial & Research Standards

All formulas and reference values used in this tool are sourced from peer-reviewed scientific literature and validated clinical guidelines. Our research team continuously audits each calculator for accuracy and updates methodology as new evidence emerges.

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