| Swindon to Oerlinghausen | 447.22 mi (719.74 km) |
| Swindon to Oestrich-Winkel | 440.28 mi (708.56 km) |
| Swindon to Offenburg | 480.81 mi (773.78 km) |
| Swindon to Oftersheim | 479.80 mi (772.17 km) |
| Swindon to Ohrdruf | 543.48 mi (874.65 km) |
| Swindon to Ohringen | 522.43 mi (840.78 km) |
| Swindon to Olbernhau | 657.26 mi (1,057.76 km) |
| Swindon to Olching | 626.52 mi (1,008.29 km) |
| Swindon to Oldenburg | 435.33 mi (700.60 km) |
| Swindon to Oldenburg in Holstein | 559.42 mi (900.30 km) |
| Swindon to Olfen | 392.82 mi (632.18 km) |
| Swindon to Olpe | 416.79 mi (670.76 km) |
| Swindon to Olsberg | 441.75 mi (710.93 km) |
| Swindon to Oranienburg | 640.67 mi (1,031.07 km) |
| Swindon to Ortenberg | 478.38 mi (769.89 km) |
