| Castelo Branco to Southern Pines (North Carolina) | 3,846.16 mi (6,189.79 km) |
| Castelo Branco to Southfield (Michigan) | 3,808.91 mi (6,129.85 km) |
| Castelo Branco to Southgate (Michigan) | 3,814.29 mi (6,138.50 km) |
| Castelo Branco to Southlake (Texas) | 4,793.32 mi (7,714.10 km) |
| Castelo Branco to Spanaway (Washington) | 5,223.36 mi (8,406.19 km) |
| Castelo Branco to Spanish Fork (Utah) | 5,140.10 mi (8,272.19 km) |
| Castelo Branco to Spanish Lake (Missouri) | 4,249.37 mi (6,838.71 km) |
| Castelo Branco to Spanish Springs (Nevada) | 5,479.72 mi (8,818.76 km) |
| Castelo Branco to Sparks (Nevada) | 5,485.49 mi (8,828.04 km) |
| Castelo Branco to Spartanburg (South Carolina) | 3,979.81 mi (6,404.88 km) |
| Castelo Branco to Spearfish (South Dakota) | 4,638.97 mi (7,465.71 km) |
| Castelo Branco to Speedway (Indiana) | 4,030.40 mi (6,486.31 km) |
| Castelo Branco to Spencer (Iowa) | 4,322.34 mi (6,956.13 km) |
| Castelo Branco to Spokane (Washington) | 5,024.57 mi (8,086.26 km) |
| Castelo Branco to Spokane Valley (Washington) | 5,017.78 mi (8,075.34 km) |
