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How the crowd draws

582 drawings of its land border, from memory on Borderline’s World map, 16 September 2026 to 27 October 2026.

Draw Mongolia

In numbers

Last updated on 27 October 2026
The real oneThe crowd’s
Area1,560,000 km²602,000 sq mi1,454,000 km²561,000 sq mi6.8% smaller
Outline6,958 km4,323 mi6,897 km4,286 mi0.9% shorter
Centre103.13° E, 46.96° N103.1° E, 47.0° N103.82° E, 47.41° N103.8° E, 47.4° N73 km north-east45 mi north-east
Westernmost87.75° E, 48.88° N87.7° E, 48.9° N88.22° E, 48.98° N88.2° E, 49.0° N34 km short21 mi short
Easternmost119.89° E, 46.84° N119.9° E, 46.8° N119.64° E, 47.06° N119.6° E, 47.1° N19 km short12 mi short
Southernmost104.99° E, 41.60° N105.0° E, 41.6° N104.99° E, 42.57° N105.0° E, 42.6° N108 km short67 mi short
Northernmost98.88° E, 52.11° N98.9° E, 52.1° N99.36° E, 51.49° N99.4° E, 51.5° N68 km short42 mi short

Near the land border, 54% of the crowd’s lines run inside Mongolia.

Borders

Why two lengths?

A line’s length depends on how closely it is drawn. The game’s lines are simplified: they keep a point every few kilometres and cut across small bends. The official lengths, from the CIA World Factbook, are measured on other lines. A border measured on a finer line, following every bend of its rivers and ridges, comes out longer.

Coasts differ most, and either way. Some official coastlines follow every inlet and island (Canada’s 202,080 km); others are smoothed on purpose, crossing bays and sounds (the United States’ 19,924 km), and can come out shorter than the game’s.

Players draw against the game’s line and are scored against it, so the crowd’s length is compared with the game’s, both measured the same way. Set against an official length measured another way, the comparison would say more about the two methods than about the crowd.

Mongolia and China: 4,244 km in the game, 4,630 km officially.

2 neighbours
Border withIn the gameThe crowd’s
China4,244 km in the game4,630 km officially4,118 km the crowd’s3.0% shorter
Russia2,770 km in the game3,452 km officially2,831 km the crowd’s2.2% longer

How it is measured

The crowd’s Mongolia: every few km along the real line, each drawing’s nearest point, inside Mongolia or outside it; the median over a short stretch is where the crowd puts the line there, and the real outline moved by it is the crowd’s. Where the move folds a narrow inlet over itself, the loop is cut.

The 582 drawings that scored 10 or more on Borderline’s World map, scribbles left out, the real line the game’s own. Area true to scale; the outline copies the real line’s detail, so its length changes only where the shape moves or a loop is cut.

Draw Mongolia yourself and add your line to the next update.