A person burns roughly 300 to 600 calories per hour hiking, depending on body weight, terrain, pack weight, and pace. A 180-pound person on a moderate trail will burn around 430 calories in an hour, while the same person on steep terrain could burn closer to 575. That wide range is what makes hiking one of the more variable outdoor activities for energy expenditure.
Calories Burned by Body Weight
Your body weight is the single biggest factor in how many calories you burn on a hike. Heavier bodies require more energy to move across uneven ground, and the difference is significant. Here’s what a one-hour hike on a moderate trail looks like across different weights:
- 120 lbs: ~286 calories
- 140 lbs: ~334 calories
- 155 lbs: ~370 calories
- 180 lbs: ~430 calories
- 200 lbs: ~477 calories
- 220 lbs: ~525 calories
- 250 lbs: ~597 calories
These numbers assume a flat to gently rolling trail at a normal hiking pace. Add hills or a heavy pack and the totals climb substantially, which the sections below break down.
How Steepness Changes Everything
Incline is the variable that swings your calorie burn the most dramatically after body weight. Exercise scientists use a unit called MET (metabolic equivalent of task) to rate activity intensity, and the jump from flat hiking to steep climbing is enormous. Ambling across gentle fields rates about 3.8 METs. A standard cross-country hike on mixed terrain sits at 6.0. Climbing a moderate grade of 6 to 10% at a brisk pace jumps to 7.0, and tackling a steep 11 to 20% grade reaches 8.8. At the extreme end, powering up a very steep 30 to 40% grade pushes past 15 METs, which is comparable to running at a fast pace.
In practical calorie terms for a 180-pound hiker over one hour, this looks like roughly 430 calories on a flat trail, 490 on moderate hills, and 573 on steep terrain. A 200-pound hiker on that same steep terrain would burn around 636 calories per hour. If you’re planning a hike and want a rough sense of the burn, the trail’s elevation profile matters more than the distance.
Hiking vs. Walking on Pavement
Trails burn more calories than sidewalks, even at the same pace. Uneven footing forces your stabilizer muscles to work harder with every step, and even gentle grades add up over time. A 150-pound person walking at a moderate pace on flat ground burns about 238 calories per hour. That same person hiking at a similar pace on a trail with just a 1 to 5% grade burns around 360 calories, roughly 50% more.
The gap narrows at higher body weights and brisk walking speeds. A 180-pound person walking briskly at 4 mph on flat ground burns about 451 calories per hour, which actually edges out moderate-pace hiking at a gentle grade (435 calories). So if calorie burn is your primary goal and you don’t have access to trails, fast walking on pavement can come close. But most real-world hikes involve enough elevation change and varied terrain to outpace a flat walk comfortably.
The Effect of a Backpack
Carrying weight on your back adds a meaningful bump to your energy expenditure, though the effect is smaller than many people assume for light loads. A day pack adds roughly 50 extra calories per hour. A full backpacking setup with 30 or more pounds of gear adds around 100 or more calories per hour.
To put specific numbers on it: a 180-pound hiker covering three miles on flat ground with a 15-pound pack burns about 312 calories, while the same hike with a 30-pound pack burns around 330 calories. That’s only an 18-calorie difference for doubling the pack weight on flat terrain. The real calorie impact of a heavy pack shows up on hills. A 180-pound person carrying 20-plus pounds up a 5 to 20% grade at a brisk pace hits a MET value of 10.0, which translates to roughly 634 to 700+ calories per hour depending on exact weight and conditions. That’s nearly double a flat, unloaded hike.
Trekking Poles Add Upper Body Work
Using trekking poles (sometimes called Nordic walking poles) turns hiking from a primarily lower-body activity into something closer to a full-body workout. Without poles, you’re engaging roughly 50% of your muscle mass. With them, that figure jumps to 80 to 90% because your arms, shoulders, chest, and back are actively propelling you forward with each stride.
Research estimates that adding poles increases calorie burn by 18 to 67% compared to walking the same route without them. That’s a wide range because technique matters. Simply holding poles loosely adds little. Actively planting and pushing off with each step, the way Nordic walkers do, maximizes the upper-body contribution. For a hiker already burning 400 calories per hour, even the low end of that range means an extra 72 calories, and more aggressive pole use could push the bonus well past 100 additional calories per hour.
Cold Weather and Surface Conditions
Hiking in cold temperatures nudges your calorie burn upward through a few mechanisms. Your body activates a type of fat tissue called brown fat, which burns energy specifically to generate heat. Exercising in cold conditions amplifies this effect. If you’re cold enough to shiver, your calorie burn can increase substantially, with some studies suggesting shivering alone can burn up to five times more calories than resting. Even without shivering, cold air prompts your body to work harder at temperature regulation, which has a modest but real metabolic cost.
There’s also a practical benefit: cooler temperatures let you hike longer and harder before overheating forces you to slow down. In hot, humid conditions, your body diverts energy to cooling itself and fatigue sets in earlier, often reducing total calories burned in a session simply because you cut it short.
Surface conditions matter too. Hiking through snow, sand, or mud requires significantly more energy than firm trail. Snow is especially costly because your foot sinks and must be lifted out with each step. The deeper and softer the snow, the higher the energy penalty. Packed snow on a groomed trail is only slightly harder than dirt, but breaking trail through six inches of fresh powder can increase energy expenditure dramatically compared to the same route in summer.
Estimating Your Own Burn
The simplest way to estimate your hiking calories is to multiply your body weight in kilograms by the MET value of your hike, then multiply by hours. For a rough conversion, divide your weight in pounds by 2.2 to get kilograms. A 170-pound person (77 kg) doing standard cross-country hiking (MET 6.0) for two hours would calculate: 77 × 6.0 × 2 = 924 calories.
For a more intuitive approach, use these rules of thumb. On a flat, well-groomed trail at a casual pace, expect roughly 250 to 350 calories per hour for most adults. On rolling terrain with moderate hills, bump that to 350 to 500. On steep, sustained climbs with a pack, you’re looking at 500 to 700+. These ranges account for the typical spread of body weights between 130 and 220 pounds.
Keep in mind that fitness trackers and smartwatches tend to overestimate hiking calories by 15 to 30%, partly because they struggle with the variable pace and terrain of trail hiking. Heart rate monitors are more accurate than step-based estimates, but none are perfect. If you’re tracking calories for weight management, treating your device’s number as an upper estimate is a reasonable approach.