| Castellanza to Santeramo in Colle | 516.96 mi (831.97 km) |
| Castellanza to Santo Stefano di Magra | 112.09 mi (180.39 km) |
| Castellanza to Santo Stino di Livenza | 182.81 mi (294.20 km) |
| Castellanza to Sarezzo | 62.85 mi (101.15 km) |
| Castellanza to Sarno | 438.91 mi (706.36 km) |
| Castellanza to Saronno | 6.65 mi (10.70 km) |
| Castellanza to Sarzana | 116.10 mi (186.85 km) |
| Castellanza to Sassari | 338.30 mi (544.44 km) |
| Castellanza to Sasso Marconi | 142.28 mi (228.97 km) |
| Castellanza to Sassuolo | 117.79 mi (189.57 km) |
| Castellanza to Sava | 566.56 mi (911.79 km) |
| Castellanza to Saviano | 430.25 mi (692.42 km) |
| Castellanza to Savigliano | 90.96 mi (146.38 km) |
| Castellanza to Savignano sul Panaro | 130.29 mi (209.67 km) |
| Castellanza to Savignano sul Rubicone | 201.05 mi (323.56 km) |
