How long does it take to walk 100 miles?
A hundred miles is 161 km. On foot, that is a multi-day journey: about a week on a trail at a comfortable pace, a little more than Hadrian's Wall Path.
The numbers
161 km · 100.0 miles, in steps
| A child, 1.2 m (3 ft 11 in) | about 323,900 steps |
| 1.6 m (5 ft 3 in) | about 243,000 steps |
| 1.7 m (5 ft 7 in), the average adult | about 228,700 steps |
| 1.8 m (5 ft 11 in) | about 216,000 steps |
| 1.9 m (6 ft 3 in) | about 204,600 steps |
| A giraffe, 5.5 m (18 ft) | no idea, sorry |
Step length is about 41% of height. Give or take 10% for how you walk.
How long it takes to walk
| A stroll, 4 km/h | 40 h 14 min |
| A normal walk, 5 km/h | 32 h 11 min |
| A brisk walk, 6 km/h | 26 h 49 min |
Walking without stops, on level ground.
Calories, by body weight
| 55 kg (121 lb) | about 5,642 kcal (7,501 incl. resting) |
| 70 kg (154 lb) | about 7,181 kcal (9,547 incl. resting) |
| 85 kg (187 lb) | about 8,720 kcal (11,593 incl. resting) |
| 100 kg (220 lb) | about 10,259 kcal (13,638 incl. resting) |
The walk's own cost at 5 km/h. The second number adds what you would have burned sitting still, which is what some fitness trackers show.
Try your own distance
Steps
about 228,700
205,800 to 251,500 depending on your stride, about 0.70 m a step at this height.
Distance
160.9 km · 100.0 miles
Time on foot
32 h 11 min
at 5 km/h, no stops
Calories
Depends on your weight more than anything else. Enter it to see an estimate.
That is the whole way to Hadrian's Wall Path.
How long does it take to walk 100 miles?
Walking time alone is about 32 hours at a normal pace of 5 km/h (3.1 mph), 27 at a brisk 6 km/h and 40 at a stroll of 4 km/h. Nobody walks that without sleeping, so the real answer is in days: at 20 to 25 km a day, it takes about a week. At 20 km (12 miles) a day it is about 8 days, at 25 km (16 miles) about 6. A hundred miles is 161 km. On foot, that is a multi-day journey: about a week on a trail at a comfortable pace, a little more than Hadrian’s Wall Path.
Does age change it?
Yes, but less than people expect. A meta-analysis of 41 studies and 23,111 healthy adults measured normal walking speed by decade: the fastest group, men in their forties, averaged 1.43 m/s, which is a mile in about 19 minutes, and the slowest, women over eighty, averaged 0.94 m/s, about 28 minutes a mile. Everyone in between is within that band. Over 100 miles, that difference adds up to days, so pick a daily distance that suits your own pace.
How many steps is 100 miles?
About 228,700 for an adult of average height, from about 204,600 at 1.9 m to 243,000 at 1.6 m. Over a week, that is about 33,000 steps a day, a walking holiday rather than a daily routine.
How many calories does walking 100 miles burn?
About 7,180 kcal for a 70 kg (154 lb) adult at a normal pace, from roughly 5,640 kcal at 55 kg (121 lb) to 10,260 kcal at 100 kg (220 lb). Weight decides most of it, pace barely matters between 4 and 6 km/h on the flat, and that is the walk’s own cost above sitting still. Some fitness trackers add the resting share and come out about a third higher.
A reason to walk today
Most of us know we should walk more and still skip it, because “go for a walk” has no finish line. reTrek gives you one: pick a famous route, like the Camino de Santiago or the Inca Trail, and every walk moves you further along it, with a short film about the place waiting at each milestone. You stop looking for a spare moment to walk and start walking to reach the next milestone.
Walk it with a friend and pool your steps, or race them there. Everest Base Camp is free. Get reTrek.
Other distances
Sources: Normal walking speed, a descriptive meta-analysis, Bohannon and Williams Andrews, Physiotherapy, 2011 · Energy expenditure during level human walking, Ludlow and Weyand, Journal of Applied Physiology, 2016