How Long Does It Take to Walk a Marathon?
At a brisk 3 mph, walking a marathon takes about 8 hours 45 minutes. Depending on pace, finishing 26.2 miles takes somewhere between 6.5 and 10.5 hours. The NHS's Movement 26.2 challenge spreads this across a month. That works out to about 18 minutes of brisk walking a day.
Part of our walking guide and our Movement 26.2 guide to the NHS's new walking scheme.
There are really two questions hiding inside "how long does it take to walk a marathon". One is about doing the full 26.2 miles in a single stretch. The other is about the version the NHS's Movement 26.2 challenge is built around: the same distance, spread across a month. This page answers both, with the maths shown.
- To walk 26.2 miles at a brisk 3 mph
- 8h 45m
- A day, spread over a month
- 18 min
- The NHS's brisk-pace benchmark
- 3 mph
- Same distance as 26.2 miles
- 42.2 km
How long does it take to walk a marathon in one go?
Somewhere between 6.5 and 10.5 hours of walking time, at the paces most people use day to day (2.5 to 4 mph). The table below also includes a slower, gentle-stroll pace for comparison, which takes longer. All totals are worked out the same way: 26.2 miles divided by speed in miles per hour.
| Pace | What it feels like | Total time for 26.2 miles |
|---|---|---|
| 2 mph | Gentle stroll | 13 h 6 m |
| 2.5 mph | Easy, comfortable | 10 h 29 m |
| 3 mph | Brisk, the NHS benchmark | about 8 hours 45 minutes |
| 3.5 mph | Fast | 7 h 29 m |
| 4 mph | Very fast walk | 6 h 33 m |
Workings: 26.2 miles ÷ pace in mph = hours.
Those figures are walking time only. On an actual one-day attempt, add real hours for things like:
- Food stops
- Toilet breaks
- Sore feet
- A rest on a bench
A "brisk" 8 hours 45 minutes walk can easily turn into a 10 or 11-hour day once you factor all of that in.
What's a normal walking pace for a marathon?
Probably closer to brisk than you'd guess. A meta-analysis of 41 studies covering more than 23,000 healthy adults looked at comfortable walking speeds across a wide range of ages. For healthy adults under 80, those speeds mostly sit between about 2.5 and 3.2 mph. That's not a slow amble. It's close to what the NHS calls a brisk pace, roughly 3 mph. That's the speed where you can still hold a conversation but couldn't sing along to a song.
4 mph, by contrast, isn't an average pace. It's a fast, purposeful walk that takes practice to hold for any distance. If you've ever worried your normal walking speed is too slow to count, the research says otherwise. Most people who walk regularly are already doing something close to brisk without trying.
How long does a marathon take spread over a month?
About 18 minutes a day, if you walk every single day. That's the maths behind the Movement 26.2 challenge's "marathon a month" idea. 26.2 miles ÷ 30 days ≈ 0.87 miles a day, which takes about 18 minutes at a brisk 3 mph.
Nobody walks the exact same amount every day, so here's how that daily figure shifts depending on how many days a week you actually walk.
| Pattern | Days walked | Minutes per walking day |
|---|---|---|
| Every day | 30 days | ~18 min |
| Weekdays only | 22 days | ~24 min |
| Every other day | 15 days | ~35 min |
Workings: 26.2 ÷ days walked = miles per day, then ÷ 3 mph × 60 = minutes.
TechRadar reports there's no daily minimum. Only the monthly total of 26.2 miles is expected to count. HuffPost UK's coverage puts it the same way: "it looks like Movement 26.2 is about your overall monthly walking distance." It's not meant to be a streak you have to hit every day without fail. Treat that flexibility as reported rather than confirmed until the scheme publishes its own rules.
If you want the full week-by-week plan for building up to this, rather than just the daily minutes, our beginner's guide to walking a marathon a month covers it in detail.
See how long 26.2 miles takes at your pace
The 26.2-mile distance is already filled in for you. Add your weight, height and usual walking speed, then press calculate, and it works out how long that distance takes at your pace.
Can you actually walk a marathon in one day?
Yes. People do it. At 8 to 10.5 hours of walking at typical comfortable paces, plus breaks, it's a full-day event. It's not something most people who haven't exercised in years should jump into without building up to it first. If you have a health condition, the NHS advises checking with your GP before taking on something this long.
That's exactly the gap Movement 26.2 was designed to close. Sir Brendan Foster, the Great North Run founder who helped shape the scheme, put it to LBC like this: "The challenge became very simple: can you do a marathon? Not in one day, but over the course of a month."
The month version covers the same 26.2 miles. It just removes the single long, tiring day and replaces it with about 18 minutes a day instead, whichever pattern of days suits your week. Motion can log those daily minutes automatically and turn them into a goal that flexes if a day goes sideways, rather than a countdown to one gruelling walk.
Related guides and tools
Movement 26.2: what it is and how it works
The full explainer on the NHS's marathon-a-month walking scheme, what's confirmed, what's still to come, and how it works.
Read moreWalking a marathon a month: beginner's guide
A week-by-week plan for building up to 26.2 miles a month, plus what to do when you miss a few days.
Read moreHow many steps is a marathon?
The step-count version of this same maths: totals and daily targets for 26.2 miles.
Read moreHow long to walk a marathon: FAQs
If you have anything else you want to ask, reach out to us.
How long does it take to walk a marathon at 3 mph?
About 8 hours 45 minutes of walking time. 26.2 miles ÷ 3 mph = 8.73 hours — call it about 8 hours 45 minutes. 3 mph is the pace the NHS calls brisk walking, roughly the speed where you can talk but couldn't sing.
Can you walk a marathon in a day?
Yes, but it's a full-day event once you add breaks, food and rest stops to the 6.5 to 10.5 hours of walking time. The NHS's Movement 26.2 challenge spreads the same 26.2-mile distance over a month (about 30 days) instead, so you get the same total without the single long slog.
What counts as a brisk walking pace?
About 3 mph, according to NHS guidance on walking for health. That's the pace where you can still hold a conversation but couldn't sing along to a song. A large meta-analysis of over 23,000 adults found that comfortable walking speeds for healthy adults under 80 mostly sit between about 2.5 and 3.2 mph, close to this brisk pace.
How many minutes a day is a marathon a month?
About 18 minutes a day at a brisk 3 mph pace, if you walk every day of the month. That's 26.2 miles ÷ 30 days ≈ 0.87 miles a day. Walk fewer days and the daily minutes rise: about 24 minutes on weekdays only, or about 35 minutes every other day.
Is 4 mph a normal walking pace?
No, it's a fast one. A meta-analysis of 23,111 healthy adults found that comfortable walking speeds for healthy adults under 80 mostly sit between about 2.5 and 3.2 mph. 4 mph takes real effort to sustain over any distance, so it's best treated as a fast-walk figure rather than a typical one.
Start your marathon this month - free
You don't need to find 8 hours 45 minutes in one day to walk a marathon. Motion tracks your walks automatically and turns those minutes into a daily goal that flexes with your week, working alongside the NHS Movement 26.2 challenge. See the full Movement 26.2 guide.
