How Long Does It Take to Walk a Marathon?

Quick Answer
Walking a marathon (26.2 miles) takes approximately 7 to 9 hours depending on pace.
At a brisk pace (3.5 mph): about 7 hr 29 min  ·  At a moderate pace (3.0 mph): about 8 hr 44 min  ·  At a power walk (4.0 mph): about 6 hr 33 min

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8 hr 44 min
estimated walking time
—
calories burned
52,400
approx. steps
210
city blocks
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Walk Time by Pace: a Marathon

How walking speed changes the time it takes to cover a marathon. The highlighted row is the average walking pace for most adults.

PaceSpeedTime to Walk a Marathon
Leisurely2.0 mph13 hr 6 min
Easy2.5 mph10 hr 29 min
Moderate3.0 mph8 hr 44 min
Brisk Walk3.5 mph7 hr 29 min
Power Walk4.0 mph6 hr 33 min
Race Walk4.5 mph5 hr 49 min

a Marathon Is Equivalent To...

👣
~52,500 steps
at average stride length
📏
26.2 miles
(42.2 km)
🏙️
~210 blocks
city blocks (approx)
🏟️
105 laps
around a standard track
⏰
~8 hr 44 min
at a comfortable pace

Walking a Marathon: What You Are Getting Into

A walking marathon is a full day's undertaking. At a brisk pace, you are looking at seven and a half hours on your feet. At a moderate pace, nearly nine hours. This is not hyperbole: a walking marathon is one of the most demanding physical challenges a non-athlete can undertake, and it deserves to be treated that way.

The calorie burn at marathon distance is extraordinary. A 155 lb adult walking at a moderate pace burns around 2,254 calories over the course, more than most people burn in an entire rest day. The physical demand is matched by the nutritional requirement: you will need to eat and drink during the event, not just before and after.

The mental challenge of a walking marathon is as significant as the physical one. The miles from 18 to 26 test you in a way that shorter distances do not. This is why training long walks matter: they teach you not just that your body can do the distance, but that your mind can stay with it when the effort starts to feel relentless. People who finish walking marathons consistently describe it as one of the more significant things they have done. That is an accurate assessment.

Calories Burned Walking a Marathon

Estimates based on moderate pace (3.0 mph) on flat terrain. Use the calculator above for terrain and fitness adjustments.

Body WeightCalories Burned Walking a Marathon (moderate pace)
130 lbs1802
155 lbs2149
180 lbs2495
205 lbs2842
230 lbs3188
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Frequently Asked Questions

Walking a marathon (26.2 miles / 42.2 km) takes approximately 6 hours 33 minutes at a power walk pace (4.0 mph), 7 hours 29 minutes at a brisk pace (3.5 mph), and 8 hours 44 minutes at a moderate pace (3.0 mph). Many marathon events have cutoff times of 7 to 8 hours, so confirm the specific event's rules before entering as a walker.
Walking a marathon burns approximately 1,892 to 3,366 calories for most adults at a moderate pace. A 130 lb person burns around 1,892 calories. A 155 lb person around 2,254 calories. A 180 lb person around 2,619 calories. A 230 lb person around 3,351 calories. This is one of the highest calorie burns achievable in a single walking session.
A walking marathon covers approximately 52,400 steps at average adult stride length. That is more than five times the recommended daily target in a single session, and the calorie and cardiovascular demands reflect that.
Walking a marathon without training is inadvisable and potentially risky. Even for people who walk regularly, 26.2 miles requires specific preparation: building long walks to 18 to 20 miles in training, conditioning your feet for extended time in shoes, and learning to fuel properly over multi-hour sessions. Without this preparation, the risk of injury, severe fatigue, and not finishing is high.
A realistic walking marathon training programme takes 16 to 24 weeks. It begins with comfortable 5 to 6 mile long walks and builds gradually to 18 to 20 mile training walks over that period. The focus is on building distance sustainably, not speed. Most people who complete walking marathons have trained for at least 4 months before the event.
Many marathons allow walkers, but cutoff times vary significantly by event. Some large city marathons have cutoffs of 6 to 8 hours, which may be tight for walkers at a moderate pace. Other events, particularly charity and trail marathons, have generous cutoffs or no cutoff at all. Always verify the specific event's rules and cutoff times before registering as a walker.

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