| Sleaford to Argostoli | 1,428.60 mi (2,299.11 km) |
| Sleaford to Argyroupoli | 1,554.60 mi (2,501.88 km) |
| Sleaford to Arta | 1,391.81 mi (2,239.90 km) |
| Sleaford to Artemida | 1,559.88 mi (2,510.38 km) |
| Sleaford to Aspropyrgos | 1,539.94 mi (2,478.29 km) |
| Sleaford to Athens | 1,549.38 mi (2,493.48 km) |
| Sleaford to Chaidari | 1,544.92 mi (2,486.31 km) |
| Sleaford to Chalandri | 1,550.19 mi (2,494.79 km) |
| Sleaford to Chalkida | 1,519.56 mi (2,445.49 km) |
| Sleaford to Chania | 1,692.75 mi (2,724.21 km) |
| Sleaford to Chios | 1,615.90 mi (2,600.53 km) |
| Sleaford to Cholargos | 1,551.07 mi (2,496.21 km) |
| Sleaford to Chrysoupoli | 1,433.49 mi (2,306.98 km) |
| Sleaford to Dafni | 1,551.37 mi (2,496.68 km) |
| Sleaford to Diavata | 1,379.60 mi (2,220.26 km) |
