| Watertown Town to Castelfidardo | 4,086.37 mi (6,576.38 km) |
| Watertown Town to Castelfiorentino | 3,970.17 mi (6,389.37 km) |
| Watertown Town to Castelfranco di Sopra | 3,995.02 mi (6,429.36 km) |
| Watertown Town to Castelfranco di Sotto | 3,957.34 mi (6,368.72 km) |
| Watertown Town to Castelfranco Emilia | 3,939.98 mi (6,340.79 km) |
| Watertown Town to Castelfranco Veneto | 3,941.46 mi (6,343.16 km) |
| Watertown Town to Castellabate | 4,264.66 mi (6,863.30 km) |
| Watertown Town to Castellammare del Golfo | 4,257.17 mi (6,851.26 km) |
| Watertown Town to Castellammare di Stabia | 4,228.19 mi (6,804.61 km) |
| Watertown Town to Castellamonte | 3,770.49 mi (6,068.02 km) |
| Watertown Town to Castellana Grotte | 4,338.46 mi (6,982.08 km) |
| Watertown Town to Castellaneta | 4,337.94 mi (6,981.24 km) |
| Watertown Town to Castellanza | 3,814.12 mi (6,138.23 km) |
| Watertown Town to Castellarano | 3,929.41 mi (6,323.78 km) |
| Watertown Town to Castelleone | 3,861.37 mi (6,214.27 km) |
