| Didcot to Sesimbra | 985.71 mi (1,586.35 km) |
| Didcot to Setubal | 976.65 mi (1,571.77 km) |
| Didcot to Sever do Vouga | 824.03 mi (1,326.16 km) |
| Didcot to Silves | 1,056.47 mi (1,700.23 km) |
| Didcot to Sines | 1,013.27 mi (1,630.69 km) |
| Didcot to Sintra | 968.25 mi (1,558.25 km) |
| Didcot to Sobrado de Paiva | 802.86 mi (1,292.08 km) |
| Didcot to Sobral de Monte Agraco | 949.56 mi (1,528.18 km) |
| Didcot to Soure | 873.09 mi (1,405.10 km) |
| Didcot to Tabua | 841.69 mi (1,354.57 km) |
| Didcot to Tavira | 1,048.97 mi (1,688.15 km) |
| Didcot to Tomar | 898.08 mi (1,445.32 km) |
| Didcot to Tondela | 832.57 mi (1,339.90 km) |
| Didcot to Torre de Moncorvo | 771.22 mi (1,241.16 km) |
| Didcot to Torres Novas | 908.87 mi (1,462.68 km) |
