| Harrow to Santa Ursula | 1,804.76 mi (2,904.48 km) |
| Harrow to Santander | 583.66 mi (939.31 km) |
| Harrow to Santany | 861.32 mi (1,386.16 km) |
| Harrow to Santiago de Compostela | 712.98 mi (1,147.43 km) |
| Harrow to Santiago del Teide | 1,820.73 mi (2,930.19 km) |
| Harrow to Santiponce | 1,016.27 mi (1,635.53 km) |
| Harrow to Santomera | 934.90 mi (1,504.57 km) |
| Harrow to Santona | 580.86 mi (934.81 km) |
| Harrow to Santurce-Antiguo | 583.77 mi (939.49 km) |
| Harrow to Sarria | 692.03 mi (1,113.71 km) |
| Harrow to Sauzal | 1,799.95 mi (2,896.75 km) |
| Harrow to Sedavi | 839.93 mi (1,351.74 km) |
| Harrow to Segorbe | 810.61 mi (1,304.55 km) |
| Harrow to Segovia | 756.34 mi (1,217.21 km) |
| Harrow to Senmanat | 699.10 mi (1,125.09 km) |
