Walking one mile burns roughly 80 to 100 calories for an average-weight person. That number shifts meaningfully based on your body weight, walking speed, and the terrain you’re on. A 200-pound person burns closer to 110–120 calories per mile, while someone at 130 pounds is closer to 65–75.
Why Body Weight Matters Most
Your body weight is the single biggest factor in how many calories you burn per mile. Moving a heavier body requires more energy, and the relationship is nearly linear. A simple way to estimate your calorie burn is to multiply your weight in pounds by 0.57 for a moderate walking pace (around 3 to 3.5 mph). So a 150-pound person burns roughly 85 calories per mile, a 180-pound person burns about 103, and a 220-pound person burns around 125.
This also means that as you lose weight through walking, each mile burns slightly fewer calories than it did before. The difference is small on a per-mile basis, but it’s one reason weight loss from exercise alone tends to plateau over time.
How Speed Changes the Equation
Walking faster burns more calories per minute, but the per-mile difference is smaller than most people expect. Exercise scientists use a unit called a MET (metabolic equivalent) to measure how hard your body is working relative to sitting still. Here’s how the numbers break down at different speeds, based on the Compendium of Physical Activities:
- 2.0 mph (slow stroll): 2.8 METs
- 3.0 mph (moderate pace): 3.8 METs
- 3.5 mph (brisk walk): 4.8 METs
- 4.0 mph (very brisk): 5.5 METs
A higher MET value means your body is burning energy faster. But since you also cover each mile in less time at higher speeds, the two effects partially cancel out. Walking a mile at 2.0 mph takes 30 minutes, while walking it at 4.0 mph takes 15. The faster walker burns more calories per minute but spends half the time doing it. The net result: a brisk mile at 3.5 mph burns roughly 15–20% more total calories than a slow mile at 2.0 mph, not double.
For practical purposes, if your goal is to burn the most calories in a set amount of time, walking faster helps. If your goal is to burn the most calories over a set distance, speed matters less than you’d think. Just completing the mile gets you most of the benefit.
Walking a Mile vs. Running a Mile
A common question is whether running a mile burns more calories than walking it. It does, but the gap isn’t as dramatic as the difference in effort might suggest. Running a mile typically burns 120 to 200 calories depending on body weight, compared to 80 to 120 for walking. That’s roughly 30–50% more for running.
The reason running costs more energy per mile is biomechanical. When you run, your body leaves the ground with each stride, and absorbing that impact on landing takes extra energy. Walking keeps one foot on the ground at all times, which is mechanically more efficient. So while you feel much more exhausted after running a mile, the calorie difference is moderate. If you walk two miles in the time it would take to run one and recover, you’ll come out ahead on total calories burned.
Hills Make a Big Difference
Walking uphill is one of the simplest ways to increase your calorie burn per mile without moving faster. For every 1% of incline grade, a 150-pound person burns about 10 extra calories per mile, which works out to roughly a 12% increase per percent of grade. A 5% incline, which is a noticeable but very walkable hill, adds about 50 extra calories per mile for that same person. That turns an 85-calorie mile into a 135-calorie mile.
If you’re using a treadmill, even a small incline of 2–3% more closely mimics outdoor walking, where you rarely walk on a perfectly flat surface. It also shifts more work to your glutes and hamstrings, which makes it a better overall workout beyond just the calorie numbers.
Soft Surfaces Burn Nearly Twice as Much
The surface under your feet has a surprisingly large effect. Walking on sand requires about 1.8 times more energy than walking the same speed on pavement or a firm path. That means a mile on the beach could burn roughly 150–180 calories instead of 85–100 for a 150-pound person. Your feet sink slightly with each step, and your muscles have to work harder to stabilize and push off from an unstable surface.
Grass, gravel, and dirt trails also increase the energy cost compared to sidewalks, though not as dramatically as sand. Snow has a similar amplifying effect, especially when it’s deep enough that your feet break through the surface layer.
A Quick Way to Estimate Your Burn
You don’t need a fitness tracker to get a reasonable estimate. Use this simplified approach:
- Flat ground, moderate pace: Multiply your weight in pounds by 0.57. That’s your approximate calories per mile.
- Brisk pace (3.5+ mph): Multiply by 0.67.
- Add hills: Increase your flat-ground number by about 12% for each percent of grade.
- Soft surface like sand: Multiply your flat-ground number by 1.8.
These estimates align with the formal metabolic equations used by exercise physiologists but skip the need to calculate oxygen consumption rates. They’re accurate enough for planning your walking routine or tracking your weekly calorie expenditure. Fitness watches and phone apps use similar formulas, often combined with heart rate data, to generate their estimates. If your watch gives you a number that seems wildly different from what these calculations suggest, the watch may be less reliable than the math.