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How the crowd draws

26 drawings of its land border and 25 drawings of its coast, from memory on Borderline’s Mexico map, 18 October 2026 to 27 October 2026.

In numbers

Last updated on 28 October 2026
The real oneThe crowd’s
Area44,000 km²17,000 sq mi42,000 km²16,000 sq mi6.5% smaller
Outline1,644 km1,022 mi1,411 km877 mi14.2% shorter
Centre88.13° W, 19.59° N88.1° W, 19.6° N88.12° W, 19.66° N88.1° W, 19.7° N8 km north5 mi north
Westernmost89.30° W, 19.55° N89.3° W, 19.6° N89.15° W, 18.75° N89.1° W, 18.8° N16 km short10 mi short
Easternmost86.74° W, 21.13° N86.7° W, 21.1° N86.93° W, 21.07° N86.9° W, 21.1° N19 km short12 mi short
Southernmost88.87° W, 17.90° N88.9° W, 17.9° N88.88° W, 17.98° N88.9° W, 18.0° N10 km short6 mi short
Northernmost87.09° W, 21.59° N87.1° W, 21.6° N87.16° W, 21.58° N87.2° W, 21.6° N1 km short1 mi short

Near the land border, 48% of the crowd’s lines run inside Quintana Roo. Near the coast, 59% run inland.

Borders and coast

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 INEGI (coasts, islands left out), 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.

Quintana Roo’s coast: 944 km in the game, 1,176 km officially.

3 neighbours
Border withIn the gameThe crowd’s
Yucatán397 km in the game335 km the crowd’s15.6% shorter
Campeche222 km in the game189 km the crowd’s14.9% shorter
Belize165 km in the game161 km the crowd’s2.4% shorter
The coast944 km in the game1,176 km officially785 km the crowd’s16.8% shorter
Not enough drawings yet
The worst 20% and the best 20%By how close a drawing comes to the state17 of 20 drawings needed on each side
Not enough drawings yet
Another country and MexicoFrom where are you from; no answer left out7 of 10 drawings from another country needed
The fastest and the slowest thirdBy time spent drawingDownload (0.3 MB)
Quickest and slowest to startBy time before the first lineDownload (0.3 MB)
Where drawings start and endStarts teal, ends pink, piled up blackDownload (0.1 MB)
The drawings stacked as blocksWhere many drawings pass, the stack growsDownload (1.3 MB)

How it is measured

The crowd’s Quintana Roo: every few km along the real line, each drawing’s nearest point, inside Quintana Roo 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 51 drawings that scored 10 or more on Borderline’s Mexico 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.

Measuring how far the crowd moves the centre was Matt Forrest’s idea (forrest.nyc).

Draw Quintana Roo yourself and add your line to the next update.