On a typical trail, a 70-kg hiker burns about 420–490 calories per hour; grade, pack weight, pace, and altitude shift that number.
Hiking torches energy because you move your body weight over uneven ground, often with a load and slope. The exact burn depends on four levers you can control on most outings: how long you’re out, how steep the route is, how fast you move, and how heavy your pack is. Below you’ll find an easy formula, ready-made tables, and smart tweaks that raise or lower your total with intent now.
Calories Burned On A Hike: Quick Formula
The most trusted way to estimate energy use is the MET method. One MET equals the energy you use at rest per kilogram of body weight per hour. Calories per hour are estimated with this simple rule: calories per hour = MET × body weight (kg). If you like minute-by-minute math, use calories per minute = MET × body weight (kg) ÷ 60. MET values for trail walking and hill grades come from the Adult Compendium of Physical Activities.
To pick a sensible MET for your outing, match the route and load. Easy meanders on rolling ground sit near 3.8 MET. Regular, pack-off trail travel lands near 5.3–6.0 MET. Hills with a light to medium load push MET toward 6.5–7.5. Steep grades with a heavy pack can reach double digits. Two trail hours at 6.0 MET for a 70-kg hiker comes to about 840 calories. Swap in your own weight and time to get a tight estimate.
Calorie Benchmarks By Terrain And Pack
Use the table below as a quick reference. Pick the row that best fits your day. Numbers show calories per hour at two common body weights. Values track the Compendium’s hiking and hill-climbing entries for no load, light load, and heavier load scenarios.
| Scenario (MET) | 60 kg Calories/hr | 80 kg Calories/hr |
|---|---|---|
| Hiking Slowly, No Load (3.8) | 228 | 304 |
| Normal Pace, No Load (5.3) | 318 | 424 |
| Cross-Country Hiking (6.0) | 360 | 480 |
| Hills, 10–20 lb Load (6.5) | 390 | 520 |
| Hills, 21–40 lb Load (7.5) | 450 | 600 |
| Steep Hills, Heavy Load (10.0) | 600 | 800 |
What Moves The Number Up Or Down
Slope And Elevation Gain
Climbing asks for extra oxygen and bumps the MET. Lab work on graded treadmill walking shows energy cost rising with slope and peaking on very steep grades. Long climbs early in the day stack calories fast. A rolling out-and-back with equal ups and downs will still tilt higher than flat ground because the uphills demand more than the downhills give back.
Pack Weight
Every kilo you carry raises the work. Even a small daypack nudges your total; a water-heavy pack or overnight load raises it more. Trim non-essentials, share group gear, and refill water more often if your route allows. Your knees and feet will thank you, and your energy math will look friendlier too.
Pace And Terrain
Moving faster on the same trail squeezes more calories into each hour. Roots, sand, scree, and snow also make every step costlier. Slate that looks flat on a map can ride like a ladder in person. If your map shows slow trail types or many creek crossings, expect a higher MET than a groomed path at the same grade.
Body Size
Two hikers on the same hill rarely burn the same number. The equation multiplies by body mass, so a 90-kg hiker spends about half again as much per hour as a 60-kg hiker at the same MET. Shoes, poles, and stride choices add small differences, but weight and time are the big drivers.
How To Estimate Your Own Hike
Step 1: Pick A MET
Match your plan to these cues: easy park loop with photo stops (around 3.8); steady, rolling singletrack without a pack (around 5.3–6.0); gentle hills with a small daypack (around 6.5); bigger hills with a 20–40 lb load (around 7.5). These ballparks line up with the Compendium’s labeled entries for trail walking and hill grades.
Step 2: Plug In Weight And Time
Use calories = MET × weight (kg) × hours. A 75-kg hiker on a 2-hour ridge walk at 6.0 MET: 6.0 × 75 × 2 = 900 calories. Switch to 7.0 MET with a pack and you get about 1,050 calories for the same time.
Step 3: Adjust For Extras
Add a little if the trail is sandy, rooty, or snowy. Subtract a little if the outing includes long, gentle downhills. Hot days, altitude, and poor sleep can all raise perceived effort and slow your pace, which shifts time and total burn even when the MET stays the same.
Quick Reference: Time-Based Totals At 70 kg
Here’s a handy look-up for a common body weight. Pick a column that fits your load. Totals assume a steady pace over typical trail footing.
| Duration | No Pack (6.0 MET) | With Pack (7.0 MET) |
|---|---|---|
| 30 min | 210 | 245 |
| 60 min | 420 | 490 |
| 2 hours | 840 | 980 |
| 3 hours | 1,260 | 1,470 |
Distance, Pace, And Step Count
Some hikers track distance or steps instead of time. You can still use MET math. If your GPS shows 6 miles in 2 hours on rolling ground, that’s about 3 mph. On most trails that lands in the 5.3–6.0 MET zone for no-load walking. If you wear a pack and climb a few big hills, slide the MET to 6.5–7.0 and multiply by your hours.
Not into formulas? A shortcut: at 6.0 MET, each kilogram burns about 6 calories per hour. That means every 10 kg adds around 60 calories per hour. It scales cleanly with time, so longer outings just stack the hours.
Hill repeats on a short trail can show the effect. Time one climb without a pack, then repeat with 5–10 lb of water. Your pace drops, minutes go up, and the math captures a higher total even at the same slope.
Two Sample Plans You Can Copy
Half-Day Ridge Ramble
Plan: 3-hour loop on a rolling ridge, light daypack, a few short climbs, no technical sections. Pick 6.0 MET. At 70 kg and 3 hours: 1,260 calories. Bring water, a couple of 200-calorie snacks, and a salty bite. If heat comes on or the route slows, your time may run longer, which lifts the total without any change to MET.
Overnight With A Moderate Load
Plan: 4-hour approach with a 25-lb pack, 1,500–2,000 ft of gain, cool weather. Pick 7.0–7.5 MET. At 80 kg and 4 hours at 7.0 MET: 2,240 calories. Add a small buffer for wind and trail surface. Spread food across the hike so you don’t get behind. Keep sips steady and pace conversational on the climbs.
Gear And Prep That Help The Numbers
Trim Pack Weight
Weigh your big three items (pack, sleep system, shelter) and swap heavy pieces over time. Pack food you will eat, not just food that looks light on paper. Fill bottles to match the spacing of water sources. Small cuts add up across a long day.
Dial In Pacing
Use a rate you can keep while chatting. On climbs, shorten the step and plant poles softly. On descents, keep your feet under you to avoid braking hard. Even pacing keeps heart rate in a stable zone and helps you finish fresher.
Mind The Map Details
Contour spacing tells you how steep a section feels. Long gaps between lines signal easy ground. Tight stacks mean more work. Creek crossings, talus, and sand pits slow you even when the grade looks friendly. Build a little time buffer into your plan.
How This Estimate Compares To Wearables
Watches and phone apps blend heart rate, speed, and grade to guess your burn. MET math gives you a transparent baseline you can check and tweak. If your watch shows much higher or lower totals than the tables above for the same weight and time, look at the recorded grade and pack weight; those inputs drive the gap.
Safety And Recovery Still Come First
Chasing numbers can tempt you to keep pushing when you should eat, drink, or turn around. Bring layers, sun protection, and enough water treatment for your route. Tell someone where you’re going. Fuel well after big days so you’re ready for the next outing.
Why These Numbers Are Trusted
The MET scale is a standard used in sport science and public health. The Compendium lists values for trail walking, hill grades, and pack loads. Public agencies also describe METs as a practical way to translate movement into energy use; see the CDC’s primer on METs for a clear overview. Pair those references with your own weight and trail time, and you’ll have a field-ready estimate that lines up with what researchers measure in controlled settings.
Trail-Day Checklist For Calorie Math
• Pick a MET that matches your route and load. • Multiply by your weight and time. • Add a small buffer for grade, surface, heat, and altitude. • Pack snacks that you can eat while moving. • Keep water and electrolytes handy. • Pace climbs with short steps and steady breathing. • Adjust plan if wind or weather slows you. • Log weight, time, and feel so your next estimate gets even tighter.