| Didcot to Castelfidardo | 887.21 mi (1,427.83 km) |
| Didcot to Castelfiorentino | 791.42 mi (1,273.66 km) |
| Didcot to Castelfranco di Sopra | 810.01 mi (1,303.59 km) |
| Didcot to Castelfranco di Sotto | 779.07 mi (1,253.80 km) |
| Didcot to Castelfranco Emilia | 744.14 mi (1,197.57 km) |
| Didcot to Castelfranco Veneto | 726.47 mi (1,169.14 km) |
| Didcot to Castellabate | 1,098.85 mi (1,768.43 km) |
| Didcot to Castellammare del Golfo | 1,161.58 mi (1,869.38 km) |
| Didcot to Castellammare di Stabia | 1,060.89 mi (1,707.34 km) |
| Didcot to Castellamonte | 593.29 mi (954.81 km) |
| Didcot to Castellana Grotte | 1,144.30 mi (1,841.57 km) |
| Didcot to Castellaneta | 1,148.58 mi (1,848.46 km) |
| Didcot to Castellanza | 620.15 mi (998.04 km) |
| Didcot to Castellarano | 736.28 mi (1,184.92 km) |
| Didcot to Castelleone | 665.29 mi (1,070.68 km) |
