The short answer: about 35 to 40 miles, because the average adult burns roughly 100 calories per mile walking, and a pound of body fat holds roughly 3,500 calories. But your weight changes the math — a lot. Check your personal burn rate with our walking calories calculator, then find your exact number in the chart below.
Walking burns about 0.53 calories per mile per pound of body weight. That gives this chart — most walking guides skip the personalization, so bookmark this:
| Body weight | Calories per mile | Miles to lose 1 lb | Time at 3 mph |
|---|---|---|---|
| 130 lb (59 kg) | 69 | 50.8 miles (82 km) | 16.9 hours |
| 160 lb (73 kg) | 85 | 41.3 miles (66 km) | 13.8 hours |
| 190 lb (86 kg) | 101 | 34.8 miles (56 km) | 11.6 hours |
| 220 lb (100 kg) | 117 | 30.0 miles (48 km) | 10.0 hours |
Read that 130-lb row twice: 50.8 miles — nearly two full marathons of walking — to lose a single pound by walking alone. That is not meant to discourage you. It is meant to set the honest expectation almost no walking article gives you.
Here is exactly how the table is built, using a 160 lb (73 kg) person as the example:
Step 1 — calories per mile: 0.53 × 160 lb = 84.8 calories per mile
Step 2 — a pound of body fat stores roughly 3,500 calories
Step 3 — miles per pound: 3,500 ÷ 84.8 = 41.3 miles
Step 4 — sanity check: 41.3 × 84.8 = 3,502 ≈ 3,500. ✓
The 0.53 factor is a rule of thumb for flat-ground walking at a moderate pace (about 3 mph / 4.8 km/h). It is not a laboratory constant — heavier walkers burn more per mile because they move more mass, and that relationship is roughly linear, which is why the per-pound shortcut works well enough for planning.
For a precise figure that accounts for your pace and grade, run your route through the walking calories calculator instead of the flat-ground shortcut.
Compare the two paths to a one-pound loss for our 160-lb walker:
| Approach | Daily effort | Time to lose 1 lb |
|---|---|---|
| Walking only | 5 miles/day (1 h 40 min at 3 mph) | ~8 days (41.3 ÷ 5 = 8.3) |
| Diet only | Eat 500 fewer calories/day | 7 days (500 × 7 = 3,500) |
| Combined | 300 cal diet cut + 2.4 miles walked (200 cal) | 7 days (500 × 7 = 3,500) |
The walking-only row is the reality check: 8+ hours of walking per week to lose one pound. Diet creates a deficit far faster because you never have to "burn off" a meal you never ate — skipping one 500-calorie fast-food combo equals the walking of about 5.9 miles for our 160-lb walker (500 ÷ 84.8 = 5.9).
But here is the part the "diet beats exercise" crowd misses: walking protects the loss. People who combine diet with daily walking keep significantly more of it off long-term than dieters who do not move, and walking preserves the leg muscle that dieting alone tends to eat into. The calorie deficit calculator will show you exactly how the diet half of the equation looks for your numbers — walking is the accelerator, not the engine.
Take the 160-lb walker who wants to lose about a pound a week without suffering. The target is a 500-calorie daily deficit, split so neither diet nor exercise carries the whole load:
Diet: cut 300 calories/day — e.g., swap the afternoon soda and chips (~300 cal) for water and an apple (~95 cal)
Walking: burn 200 calories/day — 200 ÷ 84.8 = 2.4 miles (3.9 km), about 48 minutes at 3 mph
Total deficit: 500 × 7 = 3,500 calories ≈ 1 lb per week
That 2.4-mile daily walk is roughly 4,700–4,800 steps (at ~2,000 steps per mile), which fits into a lunch break plus a loop around the block after dinner. Convert your own step counts with the steps-to-miles calculator, or see how daily walking fits a structured routine in our walking plan to lose weight.
If you think in steps rather than miles, the conversion is simple: the average adult takes about 2,000 steps per mile (1,600 steps per km). For our 160-lb walker, losing one pound by walking alone means 41.3 × 2,000 = 82,600 steps — about 11,800 steps per day for a week, on top of normal daily movement. That is why the classic 10,000-steps goal is a great health habit but, by itself, a slow weight-loss strategy — as we break down in how many miles is 10,000 steps.
One honest footnote: the "3,500 calories per pound" rule is itself an approximation — it comes from the energy density of body fat (about 87% lipid × 9 cal/g × 454 g/lb ≈ 3,500), but real-world fat loss per pound varies with water shifts, glycogen, and metabolic adaptation. Treat every number in this article as a planning estimate, not a guarantee. The scale over 2–3 weeks is the final judge.
You need to walk roughly 35–40 miles to lose a pound — 50.8 miles at 130 lb, 41.3 at 160 lb, 34.8 at 190 lb, and 30.0 at 220 lb. That is a sobering amount of walking, which is exactly why the winning strategy pairs it with diet: a 300-calorie daily food cut plus a 2.4-mile daily walk loses about a pound a week for a 160-lb person without heroic effort. Find your walking burn with the walking calories calculator, size your food deficit with the calorie deficit calculator, and track it all against your TDEE.
Disclaimer: This article is for general information only and is not medical advice. If you have a medical condition, are pregnant, or are taking medication that affects your weight or activity, talk to your doctor before starting a new exercise or diet plan.
Written by the Live Fitness Check editorial team · Reviewed against our calculator methodology · Last updated October 2026
