| Speyer to Oerlinghausen | 183.20 mi (294.83 km) |
| Speyer to Oestrich-Winkel | 50.82 mi (81.79 km) |
| Speyer to Offenburg | 63.11 mi (101.56 km) |
| Speyer to Oftersheim | 7.77 mi (12.50 km) |
| Speyer to Ohrdruf | 145.88 mi (234.77 km) |
| Speyer to Ohringen | 48.90 mi (78.70 km) |
| Speyer to Olbernhau | 236.75 mi (381.02 km) |
| Speyer to Olching | 152.48 mi (245.40 km) |
| Speyer to Oldenburg | 264.41 mi (425.53 km) |
| Speyer to Oldenburg in Holstein | 359.66 mi (578.82 km) |
| Speyer to Olfen | 171.91 mi (276.66 km) |
| Speyer to Olpe | 120.22 mi (193.47 km) |
| Speyer to Olsberg | 140.32 mi (225.82 km) |
| Speyer to Oranienburg | 315.97 mi (508.50 km) |
| Speyer to Ortenberg | 76.82 mi (123.63 km) |
