| Didcot to Castelletto sopra Ticino | 606.21 mi (975.60 km) |
| Didcot to Castelli Calepio | 653.94 mi (1,052.41 km) |
| Didcot to Castelnovo ne' Monti | 729.87 mi (1,174.61 km) |
| Didcot to Castelnuovo Berardenga | 822.36 mi (1,323.45 km) |
| Didcot to Castelnuovo di Porto | 918.88 mi (1,478.80 km) |
| Didcot to Castelnuovo di Verona | 694.15 mi (1,117.13 km) |
| Didcot to Castelnuovo Rangone | 742.28 mi (1,194.58 km) |
| Didcot to Castelvetrano | 1,179.38 mi (1,898.02 km) |
| Didcot to Castelvetro di Modena | 745.31 mi (1,199.47 km) |
| Didcot to Castenaso | 762.98 mi (1,227.90 km) |
| Didcot to Castenedolo | 675.65 mi (1,087.35 km) |
| Didcot to Castiglion Fiorentino | 836.48 mi (1,346.18 km) |
| Didcot to Castiglione del Lago | 851.34 mi (1,370.10 km) |
| Didcot to Castiglione delle Stiviere | 686.18 mi (1,104.29 km) |
| Didcot to Castrolibero | 1,192.19 mi (1,918.64 km) |
