How long does it take to walk 100 miles?
About 33 h 20 min at an average 3 mph walking pace, or 28 h 34 min if you walk briskly at 3.5 mph. One hundred miles is a multi-day trek for most people. At a sustainable 15–20 miles a day, plan on five to seven days.
Your time for 100 miles
100.00 miles · 160.93 km · about 228,400 steps at your height. Climbing uses Naismith's rule (+1 hour per 600 m / ~2,000 ft of ascent).
Time to walk 100 miles at common speeds
| Speed | Pace / mile | Time | Typical of |
|---|---|---|---|
| 2.0 mph · 3.2 km/h | 30:00 | 50 h | Stroll |
| 2.5 mph · 4.0 km/h | 24:00 | 40 h | Average |
| 3.0 mph · 4.8 km/h | 20:00 | 33 h 20 min | Brisk |
| 3.5 mph · 5.6 km/h | 17:09 | 28 h 34 min | Brisk |
| 4.0 mph · 6.4 km/h | 15:00 | 25 h | Power walk |
| 4.5 mph · 7.2 km/h | 13:20 | 22 h 13 min | Power walk |
| 5.0 mph · 8.0 km/h | 12:00 | 20 h | Race walk |
What changes the answer
Hills. Hiking guides use Naismith's rule: allow an extra hour for every 600 m (about 2,000 ft) of climbing on top of the flat-ground time. Enter your route's elevation gain above to include it.
Terrain. Rough trails, sand, snow and mud slow everyone down, often well beyond what the climb alone explains. Plan conservatively off-road.
Traffic lights and crowds. City walks are usually slower than a treadmill at the same effort because of crossings.
Fatigue. On long walks most people slow in the final miles; experienced walkers on Reddit's r/walking say the same. Breaks of 5–10 minutes an hour keep the overall pace steadier.
Fitness and age. Comfortable walking speed stays around 3 mph through middle age and drifts down after 60 — see average walking speed by age.
Want to know your own pace first? Time a mile and plug it into the walking pace calculator, or plan any route with the walking time calculator.
Questions walkers ask
How long does it take to walk 100 miles?
At an average pace of 3 mph, walking 100 miles (100.00 miles, 160.9 km) takes about 33 h 20 min. A brisk 3.5 mph cuts it to 28 h 34 min; a relaxed 2.5 mph stretches it to 40 h. That is moving time only — over this distance, sleep and rest days dominate the real total.
How long is 100 miles at a fast walk?
A fast power walk of 4 mph covers 100 miles in about 25 h, before any stops.
How many steps is 100 miles?
Most adults take 2,000–2,400 steps per mile, so 100 miles is roughly 200,000–240,000 steps. Taller walkers and faster paces sit at the low end.
How many calories does walking 100 miles burn?
At 3 mph on flat ground, about 7933 calories for a 150 lb (68 kg) person and 10582 for a 200 lb (91 kg) person, using Compendium of Physical Activities MET values. Hills and faster speeds burn more.
Can the average person walk 100 miles?
Not without preparation. Distances like 100 miles need progressive training, good footwear, a fuelling plan and usually several breaks or several days.