| Castricum to Robertsville (New Jersey) | 3,657.84 mi (5,886.72 km) |
| Castricum to Robinson (Texas) | 4,977.91 mi (8,011.17 km) |
| Castricum to Robstown (Texas) | 5,196.57 mi (8,363.07 km) |
| Castricum to Rochester (Michigan) | 3,886.80 mi (6,255.20 km) |
| Castricum to Rochester (Minnesota) | 4,158.19 mi (6,691.96 km) |
| Castricum to Rochester (New Hampshire) | 3,395.49 mi (5,464.51 km) |
| Castricum to Rochester (New York) | 3,657.65 mi (5,886.42 km) |
| Castricum to Rochester Hills (Michigan) | 3,889.19 mi (6,259.05 km) |
| Castricum to Rock Hill (South Carolina) | 4,181.42 mi (6,729.35 km) |
| Castricum to Rock Island (Illinois) | 4,218.15 mi (6,788.46 km) |
| Castricum to Rock Springs (Wyoming) | 4,832.92 mi (7,777.83 km) |
| Castricum to Rockford (Illinois) | 4,124.55 mi (6,637.82 km) |
| Castricum to Rockledge (Florida) | 4,504.57 mi (7,249.41 km) |
| Castricum to Rocklin (California) | 5,341.99 mi (8,597.11 km) |
| Castricum to Rockport (Texas) | 5,161.33 mi (8,306.36 km) |
