Great Wall length by dynasty
| Dynasty / era | Approximate length built | Notes |
|---|---|---|
| Qin (221-206 BCE) | ~5,000 km | First unified wall under Qin Shi Huang; rammed earth, mostly lost |
| Han (206 BCE-220 CE) | ~10,000 km | Westernmost expansion along the Silk Road; ruined remnants in Gansu |
| Northern dynasties (4th-7th c. CE) | ~1,500 km combined | Northern Wei, Qi, Zhou - patchwork additions |
| Sui (581-618 CE) | ~1,500 km | Reinforcement of older walls |
| Jin (1115-1234) | ~3,000 km | Defensive ditch-and-wall against Mongols |
| Ming (1368-1644) | ~8,851 km | The continuous wall most visitors see today, built in stone and brick |
| Total known (all dynasties) | ~21,196 km | 2012 official survey; counts earlier walls, ruins and barriers |
How was the 21,196 km figure measured?
China's State Administration of Cultural Heritage published the 21,196 km total in 2012 after a five-year archaeological survey that mapped every dynasty's wall, including ruined and underground sections. Earlier figures (around 8,000 km) only counted the Ming wall.
- Survey ran 2007 to 2012.
- Used GPS and ground surveys, not satellite alone.
- Counts walls, watchtowers, beacon platforms and natural barriers used defensively.
- Updates the older 'Ming-only' figure that schoolbooks still quote.
How much of the Great Wall is still standing?
Less than a third of the total, by length. Most surviving wall is Ming-era; older dynasties' walls have mostly eroded. About 8.2% of the wall is well preserved and restored - the parts visitors see at Mutianyu, Badaling, Jinshanling and similar.
- Ming wall: most of what survives in restored or hikeable condition.
- Restored open-to-public stretches: a few hundred km in total.
- Most of the remaining 'wall' is foundation, rubble, or rammed-earth ruins.
How much wall will I actually walk on a day visit?
Between 2 and 12 km depending on section and route. Mutianyu's restored ridge runs about 5.4 km tower-to-tower; Jinshanling to Simatai is roughly 10 km of restored wall. You will not walk a meaningful fraction of the total.
- Mutianyu, full ridge: ~5-6 km.
- Jinshanling, full restored hike: ~8-10 km.
- Jinshanling to Simatai (where open): ~10 km.
- Badaling, typical visitor walk: ~2-3 km.
Common mistakes about Great Wall length
Quoting one number out of context
Always pair the length with which dynasty you mean. '8,851 km' is Ming; '21,196 km' is all-dynasties total.
Confusing length with walkable length
Most of the 21,196 km is ruined or restricted. Visitors only walk a few km per day on restored sections.
Using older 6,000-8,000 km figures
Those were pre-2012 Ming-only estimates. The 2012 survey added everything earlier dynasties built.
Great Wall length FAQ
- About 8,851 km for the Ming dynasty wall; about 21,196 km when every known wall and barrier from every dynasty is counted.
- The smaller figure is just the Ming-era continuous wall. The larger figure counts older dynasties' walls, ruined fragments, beacon-tower lines and natural barriers integrated into the defensive system.
- By the State Administration of Cultural Heritage in a 2007-2012 archaeological survey using GPS and ground mapping. Earlier estimates relied on incomplete maps.
- Roughly 8.2% is well preserved; about a third still has visible wall on the ground. Most older-dynasty wall has eroded to foundation only.
- Not continuously - most of it is ruined or closed. End-to-end attempts have taken 12-18 months on foot with significant detours. See our dedicated 'can you walk the entire Great Wall' page.
- About 5.4 km of restored ridge, with watchtowers numbered 1 to 23. Most visitors walk 1.5-3 km of it.
Pick a section to walk
The number is interesting; the day is what matters. For a first visit, Mutianyu is the strongest default - restored, cable car, the right size to feel without overdoing it.
For hikers, Jinshanling gives the closest sense of distance, with 8-10 km of ridge wall and far smaller crowds.