| Poplar Bluff to Castelfidardo | 5,130.15 mi (8,256.18 km) |
| Poplar Bluff to Castelfiorentino | 5,019.37 mi (8,077.90 km) |
| Poplar Bluff to Castelfranco di Sopra | 5,042.74 mi (8,115.51 km) |
| Poplar Bluff to Castelfranco di Sotto | 5,006.53 mi (8,057.23 km) |
| Poplar Bluff to Castelfranco Emilia | 4,983.86 mi (8,020.74 km) |
| Poplar Bluff to Castelfranco Veneto | 4,977.31 mi (8,010.20 km) |
| Poplar Bluff to Castellabate | 5,320.04 mi (8,561.78 km) |
| Poplar Bluff to Castellammare del Golfo | 5,325.74 mi (8,570.95 km) |
| Poplar Bluff to Castellammare di Stabia | 5,282.87 mi (8,501.96 km) |
| Poplar Bluff to Castellamonte | 4,817.68 mi (7,753.31 km) |
| Poplar Bluff to Castellana Grotte | 5,385.69 mi (8,667.44 km) |
| Poplar Bluff to Castellaneta | 5,386.93 mi (8,669.42 km) |
| Poplar Bluff to Castellanza | 4,857.42 mi (7,817.27 km) |
| Poplar Bluff to Castellarano | 4,974.08 mi (8,005.00 km) |
| Poplar Bluff to Castelleone | 4,904.48 mi (7,892.99 km) |
