| Northolt to Castelfidardo | 854.05 mi (1,374.47 km) |
| Northolt to Castelfiorentino | 760.37 mi (1,223.70 km) |
| Northolt to Castelfranco di Sopra | 778.35 mi (1,252.63 km) |
| Northolt to Castelfranco di Sotto | 748.14 mi (1,204.01 km) |
| Northolt to Castelfranco Emilia | 711.75 mi (1,145.45 km) |
| Northolt to Castelfranco Veneto | 692.08 mi (1,113.79 km) |
| Northolt to Castellabate | 1,067.55 mi (1,718.05 km) |
| Northolt to Castellammare del Golfo | 1,134.09 mi (1,825.15 km) |
| Northolt to Castellammare di Stabia | 1,029.61 mi (1,657.00 km) |
| Northolt to Castellamonte | 563.71 mi (907.20 km) |
| Northolt to Castellana Grotte | 1,110.96 mi (1,787.92 km) |
| Northolt to Castellaneta | 1,115.58 mi (1,795.35 km) |
| Northolt to Castellanza | 588.57 mi (947.21 km) |
| Northolt to Castellarano | 704.19 mi (1,133.28 km) |
| Northolt to Castelleone | 633.23 mi (1,019.09 km) |
