| Sleaford to Castelletto sopra Ticino | 646.05 mi (1,039.71 km) |
| Sleaford to Castelli Calepio | 687.55 mi (1,106.51 km) |
| Sleaford to Castelnovo ne' Monti | 768.37 mi (1,236.58 km) |
| Sleaford to Castelnuovo Berardenga | 861.39 mi (1,386.27 km) |
| Sleaford to Castelnuovo di Porto | 959.12 mi (1,543.55 km) |
| Sleaford to Castelnuovo di Verona | 724.79 mi (1,166.43 km) |
| Sleaford to Castelnuovo Rangone | 777.57 mi (1,251.38 km) |
| Sleaford to Castelvetrano | 1,232.80 mi (1,984.00 km) |
| Sleaford to Castelvetro di Modena | 780.82 mi (1,256.60 km) |
| Sleaford to Castenaso | 796.01 mi (1,281.05 km) |
| Sleaford to Castenedolo | 708.35 mi (1,139.97 km) |
| Sleaford to Castiglion Fiorentino | 873.69 mi (1,406.07 km) |
| Sleaford to Castiglione del Lago | 888.99 mi (1,430.70 km) |
| Sleaford to Castiglione delle Stiviere | 718.33 mi (1,156.05 km) |
| Sleaford to Castrolibero | 1,228.98 mi (1,977.85 km) |
