How the crowd draws
1,188 drawings of its land border, from memory on Borderline’s US map, 25 September 2026 to 27 October 2026.
In numbers
| The real one | The crowd’s | |
|---|---|---|
| Area | 201,000 km²77,000 sq mi | 199,000 km²77,000 sq mi↓1.0% smaller |
| Outline | 2,016 km1,253 mi | 1,982 km1,232 mi↓1.7% shorter |
| Centre | 100.22° W, 44.47° N100.2° W, 44.5° N | 100.27° W, 44.44° N100.3° W, 44.4° N↙5 km south-west3 mi south-west |
| Westernmost | 104.06° W, 44.98° N104.1° W, 45.0° N | 104.05° W, 45.00° N104.1° W, 45.0° N→1 km short0 mi short |
| Easternmost | 96.44° W, 43.12° N96.4° W, 43.1° N | 96.46° W, 43.12° N96.5° W, 43.1° N←2 km short1 mi short |
| Southernmost | 96.51° W, 42.48° N96.5° W, 42.5° N | 96.51° W, 42.50° N96.5° W, 42.5° N↑2 km short1 mi short |
| Northernmost | 100.66° W, 46.00° N100.7° W, 46.0° N | 99.38° W, 45.97° N99.4° W, 46.0° N↓3 km short2 mi short |
Near the land border, 52% of the crowd’s lines run inside South Dakota.
Borders
| Border with | In the game | The crowd’s |
|---|---|---|
| Nebraska | 665 km in the game | 654 km the crowd’s↓1.7% shorter |
| North Dakota | 577 km in the game | 571 km the crowd’s↓1.0% shorter |
| Minnesota | 297 km in the game | 288 km the crowd’s↓3.0% shorter |
| Wyoming | 221 km in the game | 220 km the crowd’s↓0.5% shorter |
| Iowa | 157 km in the game | 154 km the crowd’s↓1.9% shorter |
| Montana | 105 km in the game | 103 km the crowd’s↓1.9% shorter |
How it is measured
The crowd’s South Dakota: every few km along the real line, each drawing’s nearest point, inside South Dakota 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 1,188 drawings that scored 10 or more on Borderline’s US 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. The map lays the 1,000 most recent; the heat map, the crowd’s shape and every figure use all 1,188.
Draw South Dakota yourself and add your line to the next update.