Scenario

Calories Burned Running 5 km — Calculator by Weight

Find out exactly how many calories you burn running 5 km at any weight. Our calculator uses the proven 1 kcal/kg/km formula to give accurate results.

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Your Details

kg
miles
min/mile

Calories Burned Running

Total Calories

625kcal

Calories per Mile

125kcal

Speed

6mph

Summary: Running 5 miles at a pace of 10:00 /mile burns approximately 625 kcal for a 70 kg person.

Calories by Running Pace (5 mi)

Calories by Distance (10:00 /mile)

The formula

The formula

How Running Calories Are Calculated

Calories burned while running are estimated using the American College of Sports Medicine (ACSM) running formula, which calculates oxygen consumption (VO2) based on running speed, then converts it to calorie expenditure. The ACSM formula is the standard for running energy expenditure estimation and is used in most clinical and research settings.

The formula models the relationship between running speed and oxygen demand: faster running requires more oxygen, which means more calories burned. Unlike walking, where the MET approach is used, the ACSM formula for running uses a linear VO2-to-speed relationship that is accurate across a wide range of running speeds.

The Formula

VO₂ = 0.2 × Speed(m/min) + 3.5
Calories/min = VO₂ × Weight(kg) ÷ 200
Calories/mile = Calories/min × Pace(min/mile)

Speed is converted from pace to meters per minute

VO₂ is expressed in mL/(kg·min)

Formula Source

This calculator uses the **ACSM running metabolic equation** from **American College of Sports Medicine, ACSM's Guidelines for Exercise Testing and Prescription (11th ed.)**, published by **Wolters Kluwer in 2021**.

Reference URL: https://pubmed.ncbi.nlm.nih.gov/21681120/

Last Verified: 2026-07-30

Worked Example

A 70 kg person runs 5 miles at a 10 min/mile pace (6 mph). Speed = 6 × 26.8224 = 160.9 m/min. VO₂ = 0.2 × 160.9 + 3.5 = 35.68 mL/(kg·min). Calories/min = 35.68 × 70 ÷ 200 = 12.5 kcal. Calories per mile = 12.5 × 10 = 125 kcal. Total calories = 125 × 5 = 625 kcal. If the same person runs at a faster 7 min/mile pace (8.57 mph), the per-mile burn rises to approximately 140 kcal per mile — a 12% increase in per-mile burn for a 43% increase in speed.

FAQ-Style Explanations

Does running faster burn more calories per mile? Yes, but the difference is smaller than most people think. The per-mile difference between a 10 min/mile pace and a 7 min/mile pace is about 10–15%. The bigger factor in total calories is total distance.

Why does the ACSM formula use VO₂? The ACSM formula is derived from the relationship between oxygen consumption and running speed. This is the same relationship that underlies the MET system, but the ACSM formula is specifically calibrated for running.

Does running on a treadmill burn the same calories? Treadmill running typically burns 5–10% fewer calories due to the lack of air resistance and terrain changes. Setting the treadmill to a 1% incline can compensate for this difference.

Known Limitations

  • The ACSM formula assumes level ground running. Uphill running increases VO₂ demand by roughly 3–5% per degree of incline, and downhill running decreases it.
  • Individual variation in running economy can affect calorie burn by ±10–15% — a more efficient runner burns fewer calories at the same speed.
  • The formula does not account for the afterburn effect (EPOC), which adds a modest 6–15% to total calorie expenditure following intense running sessions.
Scenario guide

Scenario guide

How Many Calories Does a 5 km Run Burn?

Running 5 km is one of the most popular exercise targets, and the calorie burn follows a remarkably simple rule. Every kilogram of body weight burns approximately 1 kilocalorie per kilometer run. This means a 50 kg runner burns about 250 calories, a 60 kg runner burns 300 calories, a 70 kg runner burns 350 calories, an 80 kg runner burns 400 calories, and a 90 kg runner burns 450 calories. The formula makes it easy to estimate your burn regardless of fitness level or running experience.

Calorie Burn by Body Weight

The table below shows the approximate calorie burn for a 5 km run at different body weights. These numbers are based on the standard energy cost of running and are accurate for most runners on flat terrain. Slight variations may occur based on biomechanics, surface, and environmental conditions, but the 1 kcal/kg/km rule is a reliable baseline for everyday use.

  • 50 kg: approximately 250 calories burned over 5 km
  • 60 kg: approximately 300 calories burned over 5 km
  • 70 kg: approximately 350 calories burned over 5 km
  • 80 kg: approximately 400 calories burned over 5 km
  • 90 kg: approximately 450 calories burned over 5 km

Does Pace Affect Total Calories?

A common misconception is that running faster over the same distance burns significantly more calories. The truth is that pace has minimal impact on the total calorie burn for a fixed distance. Whether you run 5 km in 20 minutes or 40 minutes, the energy required to move your body weight across that distance stays nearly constant. Faster pace does increase the rate of calorie burn per minute and can elevate post-exercise metabolism slightly, but the total difference for the same 5 km is negligible.

The Simple Formula

The universal formula for running calorie estimation is 1 kcal per kilogram of body weight per kilometer run. Multiply your weight in kilograms by the distance in kilometers, and you have a reliable calorie estimate. This formula holds true across all paces, all terrain types (with small adjustments for incline), and most running styles. It is the same principle used by sports scientists and fitness tracking applications worldwide.

FAQ

Frequently Asked Questions

How many calories does a 5 km run burn for a 70 kg person?
A 70 kg person burns approximately 350 calories running 5 km, using the standard 1 kcal/kg/km formula.
Does running 5 km faster burn more calories?
No, running faster over the same 5 km distance burns nearly the same total calories. Pace affects the rate of burn, not the total energy cost for a fixed distance.
What is the formula for calculating 5 km run calories?
The formula is body weight in kilograms multiplied by distance in kilometers. For 5 km, simply multiply your weight in kg by 5.
How accurate is the 1 kcal/kg/km estimate?
The 1 kcal/kg/km estimate is accurate to within 5-10% for most runners on flat terrain. Individual factors like biomechanics, surface, and environmental conditions can cause small variations.
Does running 5 km on a treadmill burn the same as outdoors?
Treadmill running burns about 3-5% fewer calories than outdoor running due to the lack of wind resistance, though this difference is very small for a single 5 km session.
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