Calories burned calculator
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Calories Burned
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How many calories do you burn running?
The number of calories burned while running depends on body weight, speed, and duration. On average, a 70 kg person burns approximately 100 calories per mile. Use the Pace Calculator to convert times.
Heavier individuals burn more calories because moving a larger mass requires more energy. Calculate your VDOT score to optimize training intensity.
Calorie burn formula
MET-Based Calorie Calculation
Calories = MET x Weight (kg) x Time (hours)
Example: 70 kg person running at 10 km/h for 30 minutes: 9.8 MET x 70 kg x 0.5 hr = 343 calories. MET values come from the Compendium of Physical Activities.
Calories burned by weight (30 min running)
| Speed | 55 kg | 70 kg | 85 kg | 100 kg |
|---|---|---|---|---|
| 8 km/h - Light Jog | 215 cal | 275 cal | 335 cal | 395 cal |
| 10 km/h - Moderate | 270 cal | 345 cal | 420 cal | 495 cal |
| 12 km/h - Fast | 330 cal | 420 cal | 510 cal | 600 cal |
| 14 km/h - Very Fast | 385 cal | 490 cal | 595 cal | 700 cal |
Based on Compendium of Physical Activities MET values. Individual results may vary within 10%.
Calories burned per distance
The calorie cost per distance is remarkably consistent regardless of pace. Running faster burns more calories per minute, but running slower burns calories over a longer time -- the total per mile is nearly the same.
Per Mile (1.6 km)
- 55 kg: 80-85 cal
- 70 kg: 100-110 cal
- 85 kg: 125-135 cal
- 100 kg: 145-155 cal
Per Kilometer
- 55 kg: 50-55 cal
- 70 kg: 62-68 cal
- 85 kg: 77-83 cal
- 100 kg: 90-96 cal
Running vs walking: which burns more?
Running burns roughly 30-40% more calories than walking the same distance. This is because running involves a flight phase where both feet leave the ground, requiring more muscle engagement and energy.
| Activity | Calories/Mile | Calories/30 min | MET Value |
|---|---|---|---|
| Walking (5 km/h) | 70 cal | 120 cal | 3.5 |
| Brisk Walking (6.5 km/h) | 85 cal | 175 cal | 5.0 |
| Jogging (8 km/h) | 95 cal | 275 cal | 8.0 |
| Running (10 km/h) | 105 cal | 345 cal | 9.8 |
Values for 70 kg person. MET = Metabolic Equivalent of Task.
Terrain and energy cost
Running on varied terrain changes the energy cost per unit distance. Flat road running is the baseline, but hills, trails, and soft surfaces all increase the total calorie expenditure:
| Terrain | Energy cost change | Why |
|---|---|---|
| Flat road | Baseline | Reference surface |
| Treadmill | −5% | No air resistance, belt assists leg return |
| 3% uphill | +10-15% | Working against gravity |
| 5% uphill | +17-22% | Steeper grade, higher muscular demand |
| 10% uphill | +40-50% | Significant additional lifting work |
| Trail (technical) | +10-20% | Lateral stability, variable footing, obstacles |
| Sand / soft surface | +20-60% | Energy lost to surface deformation |
Use the Grade Adjusted Pace Calculator for precise per-segment analysis on hilly routes.
Fueling during longer runs
For runs lasting over 60 minutes, your body's glycogen stores begin to deplete significantly. Replacing carbohydrates during the run maintains energy availability and delays fatigue. General guidelines from sports nutrition research:
Under 60 min
Water is typically sufficient. No in-run fueling needed for most runners at this duration.
60-150 min
Aim for 30-60g of carbohydrates per hour. A single energy gel (25g carbs) every 30-45 minutes is a common approach. Start fueling by the 45-minute mark.
Over 150 min
Consistent 60g+ per hour of carbohydrates becomes essential. Include electrolytes and alternate between liquid and solid fuel sources.
These are general planning guidelines. Individual tolerance and preferences vary. Practise your fueling strategy in training, not on race day.
Estimation disclaimer
Calorie estimates are approximations based on population-level research data. Individual variation of 10-20% is normal depending on running efficiency, body composition, and environmental conditions. The calorie range displayed by the calculator reflects this ±15% expected variation. Use these figures for training awareness and general planning.
How many calories does running a 5K, 10K, half marathon, or marathon burn?
One of the most common questions runners ask is how many calories a specific race distance burns. The answer depends primarily on body weight, but here are evidence-based estimates for a 70 kg (154 lb) runner:
| Distance | Estimated calories (70 kg) | Per km |
|---|---|---|
| 5K (3.1 mi) | ~315 – 370 cal | ~63 – 74 |
| 10K (6.2 mi) | ~630 – 740 cal | ~63 – 74 |
| Half Marathon (13.1 mi) | ~1,330 – 1,560 cal | ~63 – 74 |
| Marathon (26.2 mi) | ~2,660 – 3,120 cal | ~63 – 74 |
How many calories does a 5K burn?
A 5K run burns approximately 315-370 calories for a 70 kg runner. The exact amount depends on your pace — faster running uses a higher MET value but covers the distance in less time, so the per-distance burn is similar. A heavier runner (90 kg) would burn roughly 400-475 calories.
How many calories does a 10K burn?
A 10K burns approximately 630-740 calories for a 70 kg runner. At this distance, fueling during the run is typically unnecessary for most runners, but drinking water before and after is important.
How many calories does a half marathon burn?
A half marathon (21.1 km) burns approximately 1,330-1,560 calories for a 70 kg runner. At this distance, in-race fueling becomes important — most runners benefit from 30-60 grams of carbohydrates per hour after the first 45-60 minutes.
How many calories does a marathon burn?
A marathon (42.2 km) burns approximately 2,660-3,120 calories for a 70 kg runner. This exceeds the body's glycogen stores (~2,000 cal), making race-day fueling essential. Marathon fueling typically requires 30-60 grams of carbohydrates per hour, starting early in the race.
Does running faster burn more calories?
Yes, per minute — faster running uses a higher MET value, so you burn more calories in the same amount of time. A runner at 12 km/h burns roughly 30% more calories per minute than at 8 km/h.
However, per distance the difference is modest. Research shows that running 5 km at any pace burns approximately the same total calories. The faster runner simply finishes sooner and accumulates a slightly higher post-exercise calorie burn (EPOC) due to greater metabolic stress.
For weight management, consistency matters more than speed. Run at a pace you can maintain regularly, and increase volume gradually.
References
Continue with a related calculator
Pace Calculator
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