| Poplar Bluff to Castelletto sopra Ticino | 4,842.86 mi (7,793.82 km) |
| Poplar Bluff to Castelli Calepio | 4,897.24 mi (7,881.34 km) |
| Poplar Bluff to Castelnovo ne' Monti | 4,963.63 mi (7,988.19 km) |
| Poplar Bluff to Castelnuovo Berardenga | 5,051.47 mi (8,129.55 km) |
| Poplar Bluff to Castelnuovo di Porto | 5,141.26 mi (8,274.05 km) |
| Poplar Bluff to Castelnuovo di Verona | 4,939.79 mi (7,949.83 km) |
| Poplar Bluff to Castelnuovo Rangone | 4,980.83 mi (8,015.87 km) |
| Poplar Bluff to Castelvetrano | 5,336.15 mi (8,587.70 km) |
| Poplar Bluff to Castelvetro di Modena | 4,983.46 mi (8,020.10 km) |
| Poplar Bluff to Castenaso | 5,004.21 mi (8,053.50 km) |
| Poplar Bluff to Castenedolo | 4,919.45 mi (7,917.09 km) |
| Poplar Bluff to Castiglion Fiorentino | 5,068.65 mi (8,157.20 km) |
| Poplar Bluff to Castiglione del Lago | 5,082.14 mi (8,178.91 km) |
| Poplar Bluff to Castiglione delle Stiviere | 4,930.35 mi (7,934.63 km) |
| Poplar Bluff to Castrolibero | 5,413.14 mi (8,711.60 km) |
