| Castricum to Somersworth (New Hampshire) | 3,393.82 mi (5,461.82 km) |
| Castricum to Somerton (Arizona) | 5,515.91 mi (8,877.00 km) |
| Castricum to Somerville (Massachusetts) | 3,439.94 mi (5,536.04 km) |
| Castricum to Somerville (New Jersey) | 3,659.69 mi (5,889.70 km) |
| Castricum to Sonoma (California) | 5,405.66 mi (8,699.57 km) |
| Castricum to Soquel (California) | 5,469.31 mi (8,802.01 km) |
| Castricum to South Bend (Indiana) | 4,051.45 mi (6,520.17 km) |
| Castricum to South Bradenton (Florida) | 4,623.81 mi (7,441.31 km) |
| Castricum to South Burlington (Vermont) | 3,432.14 mi (5,523.50 km) |
| Castricum to South Charleston (West Virginia) | 4,041.54 mi (6,504.22 km) |
| Castricum to South Daytona (Florida) | 4,472.09 mi (7,197.13 km) |
| Castricum to South El Monte (California) | 5,533.26 mi (8,904.93 km) |
| Castricum to South Elgin (Illinois) | 4,110.68 mi (6,615.51 km) |
| Castricum to South Euclid (Ohio) | 3,881.91 mi (6,247.33 km) |
| Castricum to South Farmingdale (New York) | 3,607.21 mi (5,805.25 km) |
