| Harlow to Castelfidardo | 846.40 mi (1,362.16 km) |
| Harlow to Castelfiorentino | 755.69 mi (1,216.17 km) |
| Harlow to Castelfranco di Sopra | 772.84 mi (1,243.77 km) |
| Harlow to Castelfranco di Sotto | 743.60 mi (1,196.70 km) |
| Harlow to Castelfranco Emilia | 705.34 mi (1,135.14 km) |
| Harlow to Castelfranco Veneto | 682.63 mi (1,098.58 km) |
| Harlow to Castellabate | 1,062.29 mi (1,709.59 km) |
| Harlow to Castellammare del Golfo | 1,133.20 mi (1,823.71 km) |
| Harlow to Castellammare di Stabia | 1,024.41 mi (1,648.64 km) |
| Harlow to Castellamonte | 561.10 mi (903.00 km) |
| Harlow to Castellana Grotte | 1,102.91 mi (1,774.96 km) |
| Harlow to Castellaneta | 1,108.00 mi (1,783.16 km) |
| Harlow to Castellanza | 583.42 mi (938.93 km) |
| Harlow to Castellarano | 698.20 mi (1,123.64 km) |
| Harlow to Castelleone | 627.38 mi (1,009.67 km) |
