| Ostrow Mazowiecka to Caguas (Puerto Rico) | 5,136.68 mi (8,266.69 km) |
| Ostrow Mazowiecka to Cahokia (Illinois) | 4,933.67 mi (7,939.97 km) |
| Ostrow Mazowiecka to Calabasas (California) | 5,978.84 mi (9,622.01 km) |
| Ostrow Mazowiecka to Caldwell (Idaho) | 5,333.03 mi (8,582.69 km) |
| Ostrow Mazowiecka to Caledonia (Wisconsin) | 4,627.74 mi (7,447.63 km) |
| Ostrow Mazowiecka to Calera (Alabama) | 5,122.09 mi (8,243.21 km) |
| Ostrow Mazowiecka to Calexico (California) | 5,998.17 mi (9,653.12 km) |
| Ostrow Mazowiecka to Calhoun (Georgia) | 4,984.34 mi (8,021.52 km) |
| Ostrow Mazowiecka to California (Maryland) | 4,483.43 mi (7,215.39 km) |
| Ostrow Mazowiecka to California City (California) | 5,896.29 mi (9,489.16 km) |
| Ostrow Mazowiecka to Callaway (Florida) | 5,246.57 mi (8,443.54 km) |
| Ostrow Mazowiecka to Calumet City (Illinois) | 4,681.90 mi (7,534.78 km) |
| Ostrow Mazowiecka to Calverton (Maryland) | 4,460.17 mi (7,177.95 km) |
| Ostrow Mazowiecka to Camano (Washington) | 5,152.39 mi (8,291.98 km) |
| Ostrow Mazowiecka to Camarillo (California) | 5,981.34 mi (9,626.03 km) |
