| Guillena to Oerlinghausen | 1,226.23 mi (1,973.42 km) |
| Guillena to Oestrich-Winkel | 1,106.77 mi (1,781.18 km) |
| Guillena to Offenburg | 1,031.17 mi (1,659.51 km) |
| Guillena to Oftersheim | 1,095.11 mi (1,762.42 km) |
| Guillena to Ohrdruf | 1,233.28 mi (1,984.78 km) |
| Guillena to Ohringen | 1,118.17 mi (1,799.52 km) |
| Guillena to Olbernhau | 1,314.77 mi (2,115.91 km) |
| Guillena to Olching | 1,142.74 mi (1,839.07 km) |
| Guillena to Oldenburg | 1,276.66 mi (2,054.58 km) |
| Guillena to Oldenburg in Holstein | 1,407.88 mi (2,265.77 km) |
| Guillena to Olfen | 1,177.70 mi (1,895.32 km) |
| Guillena to Olpe | 1,153.29 mi (1,856.04 km) |
| Guillena to Olsberg | 1,189.23 mi (1,913.88 km) |
| Guillena to Oranienburg | 1,401.52 mi (2,255.52 km) |
| Guillena to Ortenberg | 1,157.18 mi (1,862.30 km) |
