Most hikers burn about 150–300 calories per mile on moderate trails; grade, pace, body weight, and pack weight shift that number.
You came here to size up energy burn per mile on a hike. Here’s a clear, math-backed answer you can use right now, plus an easy way to tailor it to your body weight, pace, terrain, and pack.
Calories Per Mile While Hiking — Typical Ranges
Hiking energy cost is well captured by MET values (metabolic equivalents). “Hiking, cross-country” sits around the moderate-to-vigorous band in the Compendium METs, and carrying a daypack pushes that higher. Using those standard intensities gives a practical per-mile range:
- Rolling trail, no heavy pack: ~150–250 kcal per mile for many adults.
- Steep or sustained climbs, or a loaded pack: ~220–400+ kcal per mile.
Those bands come from a simple formula that converts METs into calories per mile. You’ll see the steps in a moment, plus tables you can use without doing any math.
How The Math Works (Plain English)
Energy per minute from activity is: kcal/min = MET × 3.5 × body mass (kg) ÷ 200. That’s standard exercise-science math used in labs and clinics. METs for hiking and load carriage are cataloged in the peer-reviewed Compendium; the walking grade formula used by coaches and clinicians is shown in the ACSM walking equation (speed and hill grade terms).
To get calories per mile, multiply kcal/min by minutes per mile. So if you move at 2 mph, one mile takes 30 minutes; at 3 mph, one mile takes 20 minutes.
Quick Reference Table — Calories Per Mile By Body Weight
This first table uses common hiking intensities from the Compendium: a moderate off-road effort (~6.0 MET) and a steeper, daypack-style effort (~7.8 MET). Pace is set to 2 mph to reflect real trail speeds where footing, rocks, and roots slow you down. Pick the row closest to your body weight.
| Body Weight | Rolling Trail (~6.0 MET) | Steep Hills/Daypack (~7.8 MET) |
|---|---|---|
| 120 lb (54 kg) | ~171 kcal/mi | ~223 kcal/mi |
| 140 lb (64 kg) | ~200 kcal/mi | ~260 kcal/mi |
| 160 lb (73 kg) | ~229 kcal/mi | ~297 kcal/mi |
| 180 lb (82 kg) | ~257 kcal/mi | ~334 kcal/mi |
| 200 lb (91 kg) | ~286 kcal/mi | ~371 kcal/mi |
| 220 lb (100 kg) | ~314 kcal/mi | ~409 kcal/mi |
| 240 lb (109 kg) | ~343 kcal/mi | ~446 kcal/mi |
Why Your Number Moves Up Or Down
Body Mass
All the formulas scale to body mass. A heavier hiker expends more energy for the same mile at the same pace. That’s why each row rises step-by-step in the table.
Pace And Trail Speed
Pace controls time under load. Slower pace means more minutes to finish a mile, which raises per-mile burn at a given intensity. On easy bike paths, walking pace can jump to 3–4 mph; on real dirt, many hikers sit near 2–2.5 mph.
Grade (Uphill And Downhill)
Climbing adds a vertical work term. The ACSM treadmill formula spells out the added cost from grade. Trails aren’t treadmills, but the grade term gives a clean sense of why any sustained climb bumps energy burn per mile.
Pack Weight
Load carriage raises the intensity. The Compendium lists separate METs for backpacking and for walking with loads. Add food, water, and layers and you inch closer to those higher values.
Surface And Footing
Loose gravel, sand, mud, rock steps, and snow chew up energy. Even with the same grade, uneven ground slows you down and nudges METs higher.
Use This Simple 3-Step Method To Personalize Your Number
No app needed. Grab a pen or a calculator if you like.
- Pick an intensity: use 6.0 MET for rolling forest trails without a big pack; use 7.0–8.0 MET for steeper hikes or a loaded daypack per the Compendium METs.
- Compute kcal/min: MET × 3.5 × body mass (kg) ÷ 200.
- Convert to per-mile: multiply by minutes per mile (60 ÷ mph).
Example with a 160-lb hiker (73 kg), moderate trail (6.0 MET) at 2 mph: kcal/min ≈ 6 × 3.5 × 73 ÷ 200 ≈ 7.7. Minutes per mile = 30. Per mile ≈ 7.7 × 30 ≈ 230 kcal.
What A Climb Does To The Math
Grade adds a vertical cost. Trainers use the ACSM walking equation—VO₂ = 0.1 × speed + 1.8 × speed × grade + 3.5 (mL·kg⁻¹·min⁻¹)—to estimate the bump. Convert that VO₂ to METs by dividing by 3.5. On a 10% hill at trail speeds, the vertical term lifts METs and, in turn, calories per mile. That matches real-world experience: steady climbs feel like a higher gear.
Practical Ways To Plan Fuel
Estimate The Day’s Total
Multiply your per-mile number by planned miles. Add a cushion for climbs, heat, soft surfaces, or a heavier pack. A 10-mile loop at ~230 kcal/mi lands near 2,300 kcal just for the moving time.
Pack Smart Calories
Mix quick carbs (chews, dried fruit, crackers) and steady items (nuts, nut butter, jerky). Space 150–250 kcal snacks every 45–60 minutes on rolling trails; move toward 200–300 kcal in steeper sections.
Hydration And Electrolytes
Energy burn goes hand-in-hand with fluid needs. Warm days or high altitude increase sweat. A bottle with sodium, potassium, and a touch of carbs keeps you steady over long climbs.
Pack Weight Tradeoffs
More food equals more weight. That added load raises burn a bit, yet running low is worse. Aim for enough fuel without overstuffing the bag.
Per-Mile Burn At Different Paces (160-Lb Hiker)
This second table shows how per-mile energy shifts with pace for a 160-lb hiker. It uses the same two intensity bands as above. As pace increases, time per mile drops, so the per-mile number falls even if effort feels brisk.
| Pace (mph) | Rolling Trail (~6.0 MET) | Steep Hills/Daypack (~7.8 MET) |
|---|---|---|
| 1.5 mph | ~305 kcal/mi | ~396 kcal/mi |
| 2.0 mph | ~229 kcal/mi | ~297 kcal/mi |
| 2.5 mph | ~183 kcal/mi | ~238 kcal/mi |
| 3.0 mph | ~152 kcal/mi | ~198 kcal/mi |
Worked Examples You Can Mirror
Light Day Hike With A Small Pack
Hiker: 140 lb (64 kg). Trail: rolling, shaded, a few short hills. Speed: 2.5 mph. Pick 6.0 MET. Kcal/min ≈ 6 × 3.5 × 64 ÷ 200 ≈ 6.7. Minutes per mile = 24. Per mile ≈ 160 kcal. A 7-mile loop lands near 1,120 kcal just for moving time.
Steady Climb With A Daypack
Hiker: 180 lb (82 kg). Trail: long climb, rough footing. Speed: 2.0 mph. Pick 7.8 MET. Kcal/min ≈ 7.8 × 3.5 × 82 ÷ 200 ≈ 11.2. Minutes per mile = 30. Per mile ≈ 336 kcal. A 6-mile out-and-back near a summit sits around 2,000 kcal for the hiking portion.
Mixed Terrain, Midday Heat
Hiker: 200 lb (91 kg). Trail: rolling, sunny, sand patches. Speed: 2.0 mph early, then 1.8 mph late. Start near 6.0 MET and expect drift upward as sand and heat stack up. Early miles ~286 kcal/mi; late miles land closer to ~320 kcal/mi.
Tips To Dial Accuracy Without Overthinking
- Log real pace on a few hikes. Minutes per mile steadies the math.
- Note climb time. Any hour that feels like a stair machine will spike burn. Build a buffer on routes with long ascents.
- Weigh your pack at home. Water, bear can, and layers add up.
- Use MET bands instead of chasing decimals. Rolling trails vs. steeps with a pack is a clean split for planning.
Safety And Recovery Angle
Energy gaps lead to bonking, poor footwork, and fuzzy decisions. Plan snacks, set reminders, and keep an extra bar tucked away. After the hike, rebuild with carbs plus protein and drink to thirst. Soreness fades faster when you refill the tank.
Method Notes And Sources
The numbers above use standard exercise math based on METs and time under load. Hiking and load-carriage METs come from the peer-reviewed Compendium (Ainsworth et al., updated sets); you can browse activity codes and intensities here: Compendium METs. Grade effects follow the treadmill walking formula in the ACSM calculation sheet (speed and grade terms): ACSM walking equation. Those two together give practical, repeatable trail estimates.
Bottom Line For Trip Planning
Pick the table row for your weight, choose the pace band that fits your trail, and set a per-mile target. Add a cushion for any long climb or heavy bag. Most day hikers land between 150 and 300 kcal per mile on typical dirt, with climbs moving the needle above that. Plan fuel with that in mind and the rest of the day runs smoother.