| Siena to Roura | 4,682.69 mi (7,536.06 km) |
| Siena to Saint-Georges | 4,697.84 mi (7,560.45 km) |
| Siena to Saint-Laurent-du-Maroni | 4,728.15 mi (7,609.23 km) |
| Siena to Sinnamary | 4,681.52 mi (7,534.18 km) |
| Siena to Aachen | 571.07 mi (919.04 km) |
| Siena to Aalen | 385.58 mi (620.53 km) |
| Siena to Abensberg | 379.56 mi (610.85 km) |
| Siena to Achern | 399.19 mi (642.44 km) |
| Siena to Achim | 681.62 mi (1,096.96 km) |
| Siena to Adelsdorf | 442.19 mi (711.64 km) |
| Siena to Adendorf | 689.69 mi (1,109.95 km) |
| Siena to Aerzen | 610.82 mi (983.03 km) |
| Siena to Ahaus | 636.84 mi (1,024.90 km) |
| Siena to Ahlen | 604.97 mi (973.61 km) |
| Siena to Ahrensburg | 717.27 mi (1,154.34 km) |
