| Irthlingborough to Sesena | 856.92 mi (1,379.08 km) |
| Irthlingborough to Sestao | 632.47 mi (1,017.85 km) |
| Irthlingborough to Sevilla | 1,074.28 mi (1,728.89 km) |
| Irthlingborough to Sevilla La Nueva | 843.13 mi (1,356.88 km) |
| Irthlingborough to Silla | 895.65 mi (1,441.42 km) |
| Irthlingborough to Silleda | 753.08 mi (1,211.97 km) |
| Irthlingborough to Sitges | 774.63 mi (1,246.65 km) |
| Irthlingborough to Socuellamos | 906.33 mi (1,458.59 km) |
| Irthlingborough to Soller | 881.82 mi (1,419.15 km) |
| Irthlingborough to Solsona | 720.61 mi (1,159.72 km) |
| Irthlingborough to Son Servera | 897.86 mi (1,444.96 km) |
| Irthlingborough to Sonseca | 886.55 mi (1,426.77 km) |
| Irthlingborough to Sopelana | 627.44 mi (1,009.76 km) |
| Irthlingborough to Soria | 734.57 mi (1,182.18 km) |
| Irthlingborough to Suances | 634.40 mi (1,020.97 km) |
