| Sleaford to Argentona | 801.22 mi (1,289.44 km) |
| Sleaford to Arico el Nuevo | 1,900.42 mi (3,058.42 km) |
| Sleaford to Armilla | 1,105.67 mi (1,779.40 km) |
| Sleaford to Arnedo | 748.86 mi (1,205.17 km) |
| Sleaford to Arona | 1,910.31 mi (3,074.34 km) |
| Sleaford to Arrecife | 1,789.82 mi (2,880.43 km) |
| Sleaford to Arrigorriaga | 685.75 mi (1,103.61 km) |
| Sleaford to Arroyomolinos | 894.66 mi (1,439.81 km) |
| Sleaford to Arteijo | 765.54 mi (1,232.02 km) |
| Sleaford to Arucas | 1,884.19 mi (3,032.31 km) |
| Sleaford to Aspe | 1,012.39 mi (1,629.28 km) |
| Sleaford to Astorga | 773.35 mi (1,244.59 km) |
| Sleaford to Atarfe | 1,101.17 mi (1,772.16 km) |
| Sleaford to Avila | 876.19 mi (1,410.09 km) |
| Sleaford to Aviles | 698.96 mi (1,124.87 km) |
