| System Length | Answer | % Correct |
|---|---|---|
| 402.0 km | London | 97%
|
| 375.0 km | New York City | 97%
|
| 195.1 km | Tokyo | 95%
|
| 554.0 km | Beijing | 94%
|
| 214.0 km | Paris | 93%
|
| 338.8 km | Moscow | 90%
|
| 588.0 km | Shanghai | 90%
|
| 294.0 km | Madrid | 86%
|
| 151.7 km | Berlin | 85%
|
| 331.5 km | Seoul | 78%
|
| 165.4 km | Chicago | 75%
|
| 174.7 km | Hong Kong | 74%
|
| 240.0 km | Guangzhou | 71%
|
| 146.0 km | Barcelona | 70%
|
| 213.0 km | Delhi | 69%
|
| 170.7 km | Singapore | 63%
|
| 226.5 km | Mexico City | 56%
|
| 188.0 km | Washington D.C | 53%
|
| 131.1 km | Taipei | 49%
|
| 230.0 km | Shenzhen | 46%
|
| 167.0 km | San Francisco | 45%
|
| 137.0 km | Tianjin | 41%
|
| 135.0 km | Tehran | 36%
|
| 201.6 km | Chongqing | 32%
|
| 224.3 km | Nanjing | 28%
|
| 141.0 km | Dalian | 8%
|