A mile of hiking burns about 90–230 calories, rising with body weight, grade, pack, and pace.
Trail calories vary a lot from person to person. Body weight, uphill grade, pack weight, walking speed, and even trail surface all push the number up or down. This guide gives you clear per-mile benchmarks, a simple formula you can reuse, and two quick tables you can scan before lacing up.
Calories Burned Hiking Per Mile: Quick Benchmarks
The estimates below use the standard energy method (METs) paired with realistic trail speeds. “Flat” assumes a smooth path at 3 mph. “10% Grade” assumes steady uphill at 2.5 mph. Numbers are rounded to keep the table easy to scan.
| Body Weight | Flat Mile (3 mph) | 10% Grade Mile (2.5 mph) |
|---|---|---|
| 120 lb | ~114 cal | ~160 cal |
| 150 lb | ~143 cal | ~200 cal |
| 180 lb | ~171 cal | ~240 cal |
| 200 lb | ~191 cal | ~267 cal |
| 220 lb | ~210 cal | ~293 cal |
| 250 lb | ~238 cal | ~333 cal |
What Drives Calories Per Mile On Trails
Body Weight
Energy scales with mass. A heavier hiker uses more energy to move the same mile. That’s why two partners on the same loop can end the day with different totals, even at the same pace.
Uphill Grade
Climbing raises the energy cost per minute and often slows the pace, so a single mile uphill takes longer and costs more. A shallow grade adds a modest bump; steep grades can double the per-mile burn for the same hiker.
Pack Weight
Carrying gear raises the workload. Daypacks add a little; backpacking loads add more. The activity list in the Compendium of Physical Activities assigns higher intensity values to hill climbing and packed walking, which maps directly to higher calorie cost per mile.
Pace And Time On Foot
Per mile math multiplies intensity by the minutes it takes to complete that mile. Slower pace on rough terrain means more minutes at a moderate or hard effort, which lifts the total. Smooth trails let you finish the same mile in less time.
Surface And Footing
Loose gravel, sand, mud, roots, and side-hilling make each step less efficient. Your pace dips and stabilizer muscles work harder, both of which nudge the per-mile total upward.
Heat, Cold, And Wind
Weather can shift effort. Heat raises heart rate at a given pace. Cold and wind can cost energy through shivering or resistance. These shifts are secondary to weight, grade, and pack, but they do show up over long days.
How The Numbers Are Estimated
Fitness science uses METs (metabolic equivalents) to translate movement into energy cost. One MET is resting effort. Hiking across varied ground commonly sits near 6 METs, hill climbing ranges higher, and backpacking with heavier loads slots around 7 METs or more based on pace and grade. The Compendium entries for “Hiking, cross country” (6.0), “Backpacking” (7.0), and “Climbing hills” ranging from 5.0 up to the teens anchor the estimates used here.
To get calories, use this quick formula:
Calories = MET × 3.5 × body weight(kg) ÷ 200 × minutes
Then convert minutes using your pace. A 3 mph mile is 20 minutes; 2.5 mph is 24 minutes; 2.0 mph is 30 minutes. If you want a personal plan that adapts to weight change and activity time, try the NIH’s Body Weight Planner for a broader energy picture beyond a single hike.
Turn The Formula Into A Trail-Ready Estimate
Pick A Baseline
For smooth paths, start with 6 METs and 3 mph. For steady uphill on typical trails, start near 7 METs and 2.5 mph. For steep grades where you slow near 2 mph, push METs toward 8–9.
Adjust For Your Pack
Small daypack (water, layers): nudge the intensity up a notch. Bigger overnight kit: add more. In the Compendium, daypack hiking sits around 7.8 METs, while general backpacking sits near 7.0 at a moderate pace. Your pace and grade still decide the final number.
Check Your Pace Against Terrain
Use recent GPS splits from similar trails. If you average 22–24 minutes per mile on rolling singletrack, use that time window in the formula. For rocky climbs that push you to 28–30 minutes per mile, plug in that time.
Do A Quick Head-Math Pass
Here’s a fast rule for a typical unladen hiker: at 3 mph on easy ground, each mile costs about 0.95 calories per pound. That’s why a 180-lb hiker lands near 170–175 calories per easy mile, and a 150-lb hiker lands near 140–145.
Worked Examples You Can Copy
Easy Loop, No Pack
Person: 150 lb Terrain: flat path, 3 mph Intensity: 6 MET
Calories = 6 × 3.5 × 68.0 ÷ 200 × 20 ≈ 143 per mile.
Rolling Trail, Light Daypack
Person: 180 lb Terrain: mixed grades, 2.5–3 mph Intensity: ~7 MET
Calories = 7 × 3.5 × 81.6 ÷ 200 × 22–24 ≈ 225–245 per mile.
Steep Climb, Slow Pace
Person: 200 lb Terrain: 10%+ grade, ~2 mph Intensity: ~8–9 MET
Calories = 8.5 × 3.5 × 90.7 ÷ 200 × 30 ≈ 425 per mile (steeper grades or loose footing can push this higher).
Calorie Burn Per Mile With Packs
This table compares three common setups for a 180-lb hiker on mellow ground at 3 mph. It shows how a pack nudges the per-mile total. Values draw on the Compendium’s intensity listings for cross-country hiking, backpacking, and daypack walking.
| Mode | Intensity (MET) | Calories Per Mile |
|---|---|---|
| No Pack, Easy Path | 6.0 | ~171 cal |
| Backpacking Load | 7.0 | ~200 cal |
| Daypack, Group Pace | 7.8 | ~223 cal |
How To Use These Numbers For Trip Planning
Estimate Food
Multiply your miles by your per-mile estimate, then add your base burn from normal living. Most hikers do well packing a small buffer. Dense snacks and steady sipping keep energy even across the day.
Set Expectations For The Group
Mixing fitness levels? Plan pace and regroup points by time, not just distance. A slow mile on a rocky climb can chew through the same energy as two easy miles on a smooth greenway.
Match Footwear To The Terrain
Grippy soles save energy on loose, steep ground. Better traction cuts slips and wasted steps, which trims hidden costs that never show on a map.
Use A Personal Feedback Loop
Log your next few hikes. Note weight at the trailhead, pack load, terrain, weather, moving time, and distance. Compare watch-reported calories to the table and formula, then tune your personal per-mile number for that region.
FAQ-Free Quick Tips
Don’t Chase A Single “Right” Number
Per-mile energy is a range, not a fixed label. Use the table to anchor expectations, then adjust on trail with pace and effort.
Small Tweaks Add Up
Tighten pack straps so weight sits closer to your center. Shorten poles on steep climbs. Shorten your stride on loose rock. These small tweaks shave effort over many miles.
Recovery Pays Back
Post-hike carbs and protein help refill the tank. Sleep and hydration set up your next session so the same loop costs fewer calories per mile.
Method Notes And Source Backing
This guide uses the standard MET method to translate activity into energy, paired with minutes per mile based on common trail paces. The activity list and intensity anchors come from the Adult Compendium of Physical Activities. The quick calculation format (MET × 3.5 × kg ÷ 200 × minutes) is the widely used approach in health and fitness education. For a broader look at energy balance across days and weeks, the NIH planner is a helpful companion tool.
Build Your Own Mile-By-Mile Plan
Step 1: Choose Terrain And Pace
Pick a MET level that fits your route: ~6 for smooth paths, ~7 for steady climbing, up to ~8–9 for steep grades. Then pick the minutes per mile you expect on that terrain.
Step 2: Run The Numbers
Plug your weight and minutes into the formula. Keep a small spreadsheet or note on your phone with one row per route you hike often. After a few trips you’ll have a personal list that beats any generic chart.
Step 3: Adjust For Packs And Heat
Add a bump for a loaded pack or hot days. If your pace slows, the minutes term goes up, which raises the per-mile total even at the same intensity.
Step 4: Sanity-Check With Wearables
Device estimates vary, yet the trend is useful. If your watch lands close to your table-based guess on similar routes, you’re dialed for that region and season.
Key Takeaways You Can Use Right Away
- On easy paths at 3 mph, a handy rule is ~0.95 calories per pound per mile.
- Uphill miles cost more because intensity and time both rise.
- Packs nudge the number up; a heavy overnight kit adds a clear bump over a tiny daypack.
- Make a simple template once, then reuse it for every trail you hike.
References: Adult Compendium of Physical Activities (trail and hill-climb intensity listings) and the NIH Body Weight Planner (energy balance planning). Links are provided above for direct access.