How the 5 km Time Is Calculated
Time = distance ÷ speed. At 5 km/h moderate: 5 ÷ 5 = 1.0 hours ≈ 60 minutes.
At 6.5 km/h brisk (fast enough to lightly puff): 46 minutes. Slow strolling at 4 km/h: 75 minutes — a 60–70% time increase over brisk.
In steps, 5 km ≈ 6,756 steps at a 0.74 m stride. A shorter walker (0.66 m/step) needs about 7,575 steps; a taller walker (0.79 m/step) about 6,329.
The pace-time relationship
Speed drops time linearly. Doubling your pace from 4 km/h to 8 km/h halves the time. But the calorie burn per km rises with brisk walking because MET goes from 2.8 to 5.0 — you cover the 5 km faster AND burn more per km.
Terrain and incline adjustments
Hilly routes add 10–20% to your 60-min moderate estimate. A steady 5% incline (mild hill or treadmill setting) adds ~15% time and ~30% calories. Trail surfaces (dirt, gravel) add ~5% vs. paved sidewalk.
Common walk analogs
5 km is comparable to a longer neighbourhood exploration. Plan 51 min end-to-end including stoplights and photo stops.
How walking speed changes with age
Average walking speed drops ~1% per year after age 40. A fit 30-year-old averages 5.2 km/h; a fit 70-year-old averages ~4.2 km/h. Personal fitness matters far more than age within any decade.
How Long 5 km Takes at Different Paces
| Pace | Time | Steps | Calories (70 kg) |
|---|---|---|---|
| Slow (4 km/h) | 75 min | 6,756 steps | 257 kcal (70 kg) |
| Moderate (5 km/h) | 60 min | 6,756 steps | 257 kcal (70 kg) |
| Brisk (6.5 km/h) | 46 min | 6,756 steps | 283 kcal (70 kg) |
| Power walk (7.5 km/h) | 40 min | 6,756 steps | 309 kcal (70 kg) |
Times assume flat ground. Add 10–15% on hilly routes.
How we calculate this (worked example)
Every figure on this page is produced by the same calculation engine as the calculator above — no hardcoded numbers. Here is the full arithmetic for 10,000 steps at 70 kg (154 lbs), moderate pace, flat ground.
- Distance: 10,000 steps × 0.74 m ÷ 1,000 = 7.40 km (4.60 miles)
- Walking time: 7.40 km ÷ 5 km/h × 60 = 1h 29m (89 minutes)
- Calories: 3.5 MET × 70 kg × 3.5 ÷ 200 × 89 min = 381 kcal
- Per step: 381 kcal ÷ 10,000 steps = 0.038 kcal per step
10,000 steps by body weight
| Body weight | Distance | Walking time | Calories burned |
|---|---|---|---|
| 55 kg (121 lbs) | 7.40 km (4.60 mi) | 1h 29m | 299 kcal |
| 70 kg (154 lbs) | 7.40 km (4.60 mi) | 1h 29m | 381 kcal |
| 85 kg (187 lbs) | 7.40 km (4.60 mi) | 1h 29m | 462 kcal |
| 100 kg (220 lbs) | 7.40 km (4.60 mi) | 1h 29m | 544 kcal |
Distance and time are identical across weights (7.4 km at 0.74 m stride) because only energy expenditure scales with body mass.
Definitions
- Step
- One single footfall. Two steps make one full stride cycle, so a pedometer counting 10,000 steps records 5,000 complete left-right cycles.
- Stride length
- The horizontal distance covered by one step, measured heel-to-heel. We use 0.74 m (2.43 ft) as the average adult value, or 0.415 × height in cm for men and 0.413 × height for women.
- Walking distance
- Steps × stride length. Distance in kilometres = (steps × stride in metres) ÷ 1,000; miles = kilometres × 0.621371.
- Calories burned
- Energy expenditure estimated with the MET equation: kcal = MET × weight (kg) × 3.5 ÷ 200 × minutes. Moderate walking at 5 km/h is MET 3.5.
- Walking time
- Distance ÷ walking speed. At the 5 km/h baseline, one kilometre takes 12 minutes and one mile takes about 19 minutes.
- Cadence
- Steps per minute. A moderate 5 km/h pace corresponds to roughly 100–110 steps per minute; brisk walking is 120+ steps per minute.
Assumptions and rounding rules
| Parameter | Default | Rule |
|---|---|---|
| Stride length | 0.74 m (2.43 ft) | Average adult; overridden by your height or entered stride |
| Walking pace | 5 km/h (3.1 mph) | Moderate, flat ground; reduced 20% on hills and 30% on trails |
| MET value | 3.50 | Flat terrain, moderate fitness; +0.1 MET per 1% incline |
| Body weight | 70 kg (154 lbs) | Reference weight for examples; your input replaces it |
| Distance rounding | 2 decimals (km and miles) | Rounded for display only — full precision is used in the maths |
| Calorie rounding | Nearest whole kcal | Rounded at the last step, never mid-calculation |
| Step rounding | Nearest whole step | Reverse calculations round to the nearest integer step |
Limitations
- All results are estimates, not measurements. MET-based calorie models typically fall within ±10–20% of indirect calorimetry for an individual.
- Individual differences in gait efficiency, age, body composition and fitness change actual energy cost at the same speed.
- Terrain, surface softness, wind and altitude are only partly captured by the terrain and incline settings.
- Stride length varies with pace, footwear and fatigue; a single average stride cannot represent a whole walk.
- Pedometers and phone accelerometers miscount steps by roughly 5–15%, especially at slow speeds or when carried in a bag.
- Figures describe activity energy expenditure only and exclude resting metabolism, so they should not be subtracted twice from a daily budget.
Method: stride-based distance plus the MET equation from the Compendium of Physical Activities (Ainsworth et al.). Results are estimates — see our estimation disclaimer.
Calorie burn scales with body weight
Bar length shows relative energy expenditure. A heavier body must move more mass per step, so the same step count burns proportionally more calories.
Key takeaway
5 km takes ~60 min moderate, ~46 min brisk, and is roughly 6,756 steps.
Want your exact number?
Real-Life Scenarios
Commuter
If your commute is 5 km, budget 48 min door-to-door — enough to hit brisk pace without needing a change of clothes.
Errand runner
For a 5 km round trip (grocery, pharmacy, café), plan 120 min walking + 10 min inside. Beats driving under 3 km once parking is factored in.
Weekend explorer
On a park visit, 5 km is 'one full lap' of most large city parks. Bring water for anything over 3 km.
In summary: 5 km takes ~60 min moderate, ~46 min brisk, and is roughly 6,756 steps.