| Gouveia to Oerlinghausen | 1,105.15 mi (1,778.57 km) |
| Gouveia to Oestrich-Winkel | 999.75 mi (1,608.95 km) |
| Gouveia to Offenburg | 940.14 mi (1,513.00 km) |
| Gouveia to Oftersheim | 997.61 mi (1,605.50 km) |
| Gouveia to Ohrdruf | 1,131.65 mi (1,821.22 km) |
| Gouveia to Ohringen | 1,027.13 mi (1,653.01 km) |
| Gouveia to Olbernhau | 1,225.22 mi (1,971.80 km) |
| Gouveia to Olching | 1,071.26 mi (1,724.02 km) |
| Gouveia to Oldenburg | 1,144.67 mi (1,842.17 km) |
| Gouveia to Oldenburg in Holstein | 1,279.21 mi (2,058.68 km) |
| Gouveia to Olfen | 1,052.26 mi (1,693.44 km) |
| Gouveia to Olpe | 1,035.99 mi (1,667.27 km) |
| Gouveia to Olsberg | 1,072.36 mi (1,725.80 km) |
| Gouveia to Oranienburg | 1,293.22 mi (2,081.24 km) |
| Gouveia to Ortenberg | 1,052.16 mi (1,693.29 km) |
