How Many Calories Do 13 Miles Burn? | Smart Range

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Walking or running 13 miles burns about 900–2,000 calories for 120–200 lb adults; body weight and pace set your exact total.

How Calorie Burn For 13 Miles Actually Works

The cleanest way to estimate energy use is with MET values (metabolic equivalents). One MET equals resting effort. Activities sit above that. Brisk walking sits in the moderate band, and running sits in the vigorous band. The CDC explains this intensity scale, and the adult Compendium lists METs by pace.

Once you know the MET for your pace, use this simple formula:

Calories per minute = MET × 3.5 × body weight (kg) ÷ 200Compendium math

Multiply by minutes to get your total for 13 miles. Time depends on speed. At 3.5 mph, 13 miles takes ~223 minutes. At 6.0 mph, it takes 130 minutes. The Compendium assigns about 4.3 MET to a 3.5 mph walk and ~9.8 MET to a 6.0 mph run. That’s why walking a long time still racks up a big total, and running comes out higher mostly because each minute costs more.

How Many Calories Do 13 Miles Burn For You?

Here’s a quick, weight-and-pace snapshot using those METs. Pick the row closest to you. The walk line uses 3.5 mph; the run line uses 6.0 mph.

Body Weight Brisk Walk 3.5 mph Run 6.0 mph
120 lb (54.4 kg) ≈ 910 kcal ≈ 1,210 kcal
160 lb (72.6 kg) ≈ 1,220 kcal ≈ 1,620 kcal
200 lb (90.7 kg) ≈ 1,520 kcal ≈ 2,020 kcal

These ranges line up with widely used charts like the Harvard table, once you scale them to your total time. Small differences come from rounding, terrain, and your stride.

Why Pace Changes Time More Than Total Calories

For running, energy per mile is fairly steady across paces on level ground. Faster running costs more each minute, yet you spend fewer minutes covering 13 miles. Those effects trade off. At 6 mph (10-min miles), Compendium lists ~9.8 MET. At 7.5 mph (8-min miles), ~11.5 MET. The 6 mph total often comes out a bit higher because you’re on your feet longer. For walking, speed is lower and time dominates, so totals climb quickly as minutes pile up.

Step-By-Step: Estimate Your Exact Number

1) Find Your Pace And MET

Use 4.3 MET for a 3.5 mph walk and 9.8 MET for a 6.0 mph run. Other speeds are available in the Compendium listings.

2) Convert Your Weight To Kilograms

Divide pounds by 2.205. Example: 160 lb → 72.6 kg.

3) Get Your Minutes For 13 Miles

Minutes = (13 ÷ mph) × 60. At 3.5 mph, minutes ≈ 222.9. At 6.0 mph, minutes = 130.

4) Do The Math

Use the formula above. For a 160 lb person walking 3.5 mph: calories per minute ≈ 4.3 × 3.5 × 72.6 ÷ 200 ≈ 5.46. Total ≈ 5.46 × 222.9 ≈ 1,220 kcal. For the same person running 6.0 mph: calories per minute ≈ 12.45; total ≈ 12.45 × 130 ≈ 1,620 kcal.

Per-Mile Numbers You Can Reuse

Per-mile figures can help with weekly planning. Values below use 3.5 mph for walking and 6.0 mph for running on level ground.

Body Weight Walk 3.5 mph (per mile) Run 6.0 mph (per mile)
120 lb (54.4 kg) ≈ 70 kcal ≈ 93 kcal
160 lb (72.6 kg) ≈ 93 kcal ≈ 125 kcal
200 lb (90.7 kg) ≈ 118 kcal ≈ 156 kcal

The moderate versus vigorous split matches public guidance: walking at 3+ mph sits in the moderate band; jogging and running land in vigorous. See the CDC’s plain-language page on measuring intensity for a quick check.

Factors That Swing Your 13-Mile Burn

Hills And Surface

Uphill grades and soft paths raise energy cost. Downhills can reduce it a little, though braking on steep descents still takes work.

Wind And Heat

Headwinds boost effort. Warm, humid days add strain through sweat loss. Pace and perceived effort often drift even at the same route length.

Load And Gear

Packs, stroller pushing, or heavy shoes all raise cost. The Compendium lists separate METs for those variants; totals move up fast with added load.

Breaks And Stops

Long traffic lights or water stops trim minutes at effort. That lowers calculated burn slightly compared with nonstop time.

Stride And Form

Everyone moves a bit differently. Small changes in cadence, arm swing, and footstrike can nudge efficiency up or down across a long day.

Plan Smarter For A 13-Mile Day

Fuel And Fluids

  • For outings longer than ~90 minutes, carry water and a little sodium. Classic sports-nutrition advice makes a difference on warm days.
  • Start topped up. Many guides suggest ~500 ml in the couple of hours before you head out, then sip to thirst while moving.
  • If you like gels or chews, space them out to avoid gut grumbles. Chase with water, not only sports drink.

For definitions and safety basics on intensity and volume, skim the public activity guidelines.

Pacing And Recovery

  • Keep the first third easy. Let heart rate and breathing settle, then hold steady.
  • Walk breaks are fine. Five minutes of walking sprinkled in every few miles barely changes totals and can keep legs fresh.
  • Post-session, rehydrate and grab a carb-plus-protein snack within an hour. A light stretch or short walk helps stiffness fade.

Common Use Cases

Training For A Half Marathon

Most runners cover 13.1 miles in 90–180 minutes. The totals you saw above match that window. If a long run lands near 1,500–1,800 kcal for you, bring enough fuel to cover a slice of that cost and protect comfort late in the route.

Big Weekend Walks

Hitting 13 miles on foot without running is a solid day. The 1,000-plus kcal total often encourages a hearty meal. Pair that with a relaxed easy day after, and your legs will thank you.

Quick DIY Calculator

Inputs You Need

  • Your weight in kilograms
  • Your pace in mph or min/mile
  • The matching MET from the Compendium list

One-Line Formula

Total calories = MET × 3.5 × kg ÷ 200 × minutes

One Worked Line

200 lb runner at 6.0 mph → 90.7 kg, 9.8 MET, 130 min → 9.8 × 3.5 × 90.7 ÷ 200 × 130 ≈ 2,020 kcal.

Bottom Line

Think in bands. For 13 miles, lighter bodies land near 900–1,300 kcal, mid-range bodies around 1,200–1,700 kcal, and heavier bodies around 1,500–2,000+ kcal. Pace mostly shifts how long you are out there. Plug your numbers into the simple MET equation, and you’ll have a solid target for fueling and recovery.