Calories Burned Hiking with a Backpack by Pack Weight and Body Weight

Hiking with a backpack burns between 400 and 900 calories per hour for most adults, depending on pack weight, body weight, and terrain. A 154 lb (70 kg) person carrying a 20 lb pack on hilly terrain burns approximately 560 calories per hour. The same person with a 50 lb multi-day backpacking load on steep terrain burns 680 to 750 calories per hour.

Use the hiking calorie calculator to get a personalised estimate based on your weight, pack load, and terrain conditions.

Pack weight is one of the most underestimated variables in hiking calorie planning. Most calorie estimates people find online apply flat-trail MET values with no pack. The real-world difference between hiking unloaded and carrying a loaded overnight pack is 25 to 40% more calories per hour. This article covers the load-metabolic cost relationship, per-hour and per-mile tables by pack and body weight, rucking comparisons, and multi-day backpacking calorie demands.

How Does a Backpack Change Hiking Calorie Burn?

Carrying a load raises metabolic cost because the body must move additional mass against gravity with every step. The relationship between load and energy cost is near-linear at hiking speeds. Research published in the journal Ergonomics found that metabolic rate increases by approximately 1% for every 1% of body weight added as carried load. A 20 lb pack on a 154 lb person represents 13% of body weight, raising metabolic cost by approximately 13%.

For the full hiking calorie hub covering all distances, terrain types, and body weights, see the calories burned hiking guide. For a cross-activity calorie comparison, see the calories burned guide.

How Pack Weight Affects Hiking MET Values

MET adjustments based on Ergonomics load-metabolic cost research. Compendium baseline MET 6.0 and 7.0 (Ainsworth et al., 2024).

Calories Burned Hiking with a Backpack by Body Weight

Body weight multiplies the pack-adjusted MET value across the full session. Heavier hikers carrying the same absolute pack weight carry a lower percentage of body weight, so their per-pack-pound calorie increase is proportionally smaller.

Calories per Hour Hiking with a 20 lb Backpack by Body Weight and Terrain

60-minute session. 20 lb pack. Flat: MET 6.8. Hilly: MET 8.0. Steep: MET 9.0.

A 220 lb person carrying a 20 lb pack on a steep trail burns over 1,000 calories per hour. That same output at MET 6.0 unloaded on a flat trail would require carrying a 50 lb pack. Pack load and terrain grade are additive multipliers, not independent ones.

Calories Burned Hiking with a Backpack Per Mile

Per-mile hiking calories figures matter most for multi-mile trips where total output is calculated by distance rather than time. Pack weight raises per-mile output above the unloaded baseline at every body weight.

Calories Per Mile with Backpack by Pack Weight (154 lb / 70 kg, Hilly Trail)

A 50 lb pack raises per-mile output by approximately 31% over hiking with no pack on hilly terrain. Over a 10-mile day hike, that difference totals approximately 510 additional calories. For full distance-based tables, the hiking 10 miles guide covers pack-load impact across all body weights.

Backpacking Calories Per Day

Multi-day backpacking trips demand significantly more daily calories than recreational day hiking. Daily output depends on mileage, terrain, pack load, and body weight.

Daily Calorie Estimates for Multi-Day Backpacking (154 lb / 70 kg)

Most backpacking nutrition guides recommend 1.5 to 2.5 lb of food per person per day, targeting 2,500 to 4,500 calories of intake on active days. The Appalachian Trail Conservancy reports that through-hikers typically consume 3,000 to 5,000 calories per day on high-mileage days, depending on body size and terrain. A rest day calorie budget drops to 1,800 to 2,500 for the same hiker.

Finding your resting baseline calorie needs before a multi-day trip makes nutritional planning far more accurate. Adding hiking calorie output to your daily resting expenditure shows total energy needs on active backpacking days and helps prevent under-fueling across a multi-day route.

Rucking vs Hiking with a Backpack: Calorie Comparison

Rucking (walking at military pace with a weighted pack on flat to mixed terrain) and hiking with a backpack share the same core mechanic but differ in pace, terrain, and intent.

Rucking vs Hiking with Pack: Key Differences

Rucking at 4 mph with a 35 lb pack at MET 8.0 burns approximately 560 calories per hour for a 154 lb person. Hiking at 2.5 mph on steep terrain with a 35 lb pack at MET 9.5 burns approximately 665 calories per hour for the same person. Steep hiking with a loaded pack outperforms flat rucking in calories per hour despite the slower pace.

The practical difference: rucking is a structured training activity optimised for consistency and measurable pace. Hiking with a pack produces higher peak calorie output on technical terrain.

Hiking with a Weighted Vest vs Hiking with a Backpack

A weighted vest distributes load across the torso symmetrically. A backpack concentrates load on the back and shoulders asymmetrically. For calorie burn purposes, the total load is the primary driver. Distribution affects comfort and spinal loading but has minimal impact on total metabolic cost at equal pack weights.

A 154 lb person hiking with a 20 lb weighted vest on flat terrain burns approximately the same calories as hiking with a 20 lb backpack on the same terrain. Both raise effective MET from 6.0 to approximately 6.8 compared to unloaded flat hiking.

For walking-based load comparisons at lower intensities, see the calories burned walking guide.

Using Backpack Hiking for Weight Loss Planning

Backpack hiking raises per-session calorie burn enough to make a meaningful difference in weekly deficit totals. The added load does not require extra time — it simply increases the output of sessions the hiker would complete anyway.

Weekly Calorie Contribution from Backpack Hiking (154 lb / 70 kg, Hilly Terrain, 20 lb Pack)

Two weekly one-hour hikes with a 20 lb pack contribute 1,120 calories to a deficit. One 4-hour day hike with a pack contributes 2,240 calories — more than six 30-minute brisk walks produce in the same week for a 154 lb person.

A 3,500 calorie weekly deficit produces approximately 1 lb of fat loss. Two weighted day hikes per week combined with a modest dietary reduction of 200 to 300 calories per day creates a realistic 3,500 to 4,500 weekly deficit for most adults in the 150 to 185 lb range.

Use the TDEE calculator to find your maintenance calorie level. This is the baseline number your hiking calories subtract from to create the weekly deficit.

Frequently Asked Questions About Calories Burned Hiking with a Backpack

How Many Calories Does Hiking with a Backpack Burn?

A 154 lb (70 kg) person hiking with a 20 lb pack on hilly terrain burns approximately 560 calories per hour. With a 40 lb pack on the same terrain, output rises to approximately 623 calories per hour. On steep terrain with a 50 lb pack, the same person burns approximately 700 to 750 calories per hour.

How Many Extra Calories Does a Backpack Add to Hiking?

A 20 lb pack adds approximately 13% more calories per mile and per hour to hiking output for a 154 lb person. A 40 lb pack adds approximately 26% over unloaded hiking. The percentage increase is based on load as a share of body weight, so lighter hikers see a larger percentage increase from the same absolute pack weight.

How Many Calories Do You Burn Backpacking Per Day?

A 154 lb person backpacking 10 miles per day on moderate hilly terrain with a 40 lb pack burns approximately 2,200 to 2,600 calories from hiking alone. Add resting metabolic rate for the full day (approximately 1,600 to 1,800 calories) and total daily energy expenditure on an active backpacking day reaches 3,800 to 4,400 calories.

Is Rucking Better Than Hiking for Calorie Burn?

Steep hiking with a heavy pack burns more calories per hour than flat rucking with a similar load. Rucking at 4 mph with a 35 lb pack burns approximately 560 calories per hour for a 154 lb person. Steep trail hiking with the same pack at MET 9.5 burns approximately 665 calories per hour. For consistent daily calorie burning, rucking on flat routes is more measurable. For peak per-session output, steep hiking with a pack produces higher numbers.

How Many Calories Does Hiking with a 20 lb Backpack Burn?

A 154 lb (70 kg) person carrying a 20 lb pack burns approximately 475 calories per hour on a flat trail and approximately 560 calories per hour on hilly terrain. Over a 5-mile hike at 3 mph on hilly terrain, the same person burns approximately 933 calories. Over a 10-mile hilly route, total output reaches approximately 1,867 calories.

Does a Heavier Pack Always Burn More Calories?

Yes, within the range of typical hiking loads. Every pound added to the pack raises metabolic cost proportionally because the body must accelerate and decelerate more mass with each stride. At very heavy loads above 40% of body weight, gait adaptation and postural compensation begin to change movement patterns. At these loads, the metabolic cost per pound of additional weight starts to plateau, and injury risk rises faster than calorie benefit. For most recreational hikers, pack weights between 15 and 35 lb produce the best balance of added calorie burn and sustainable performance across a full day.

How Does Backpack Hiking Calorie Burn Change on Flat vs Hilly Terrain?

For a 154 lb person with a 20 lb pack, flat trail hiking burns approximately 475 calories per hour and hilly terrain burns approximately 560 calories per hour, an 18% difference from terrain alone. On a steep 10% grade with the same pack, output rises to approximately 686 calories per hour. The terrain and pack load effects compound: the body must overcome both the added mass and the gravitational resistance of each uphill step simultaneously, which is why loaded uphill hiking produces the highest per-hour calorie figures in the entire hiking calorie range.