| Celbridge to Oerlinghausen | 643.09 mi (1,034.95 km) |
| Celbridge to Oestrich-Winkel | 662.89 mi (1,066.82 km) |
| Celbridge to Offenburg | 712.97 mi (1,147.42 km) |
| Celbridge to Oftersheim | 706.05 mi (1,136.27 km) |
| Celbridge to Ohrdruf | 751.54 mi (1,209.48 km) |
| Celbridge to Ohringen | 747.91 mi (1,203.65 km) |
| Celbridge to Olbernhau | 862.17 mi (1,387.53 km) |
| Celbridge to Olching | 854.17 mi (1,374.66 km) |
| Celbridge to Oldenburg | 609.07 mi (980.21 km) |
| Celbridge to Oldenburg in Holstein | 711.89 mi (1,145.67 km) |
| Celbridge to Olfen | 594.83 mi (957.29 km) |
| Celbridge to Olpe | 628.50 mi (1,011.47 km) |
| Celbridge to Olsberg | 647.49 mi (1,042.04 km) |
| Celbridge to Oranienburg | 819.78 mi (1,319.31 km) |
| Celbridge to Ortenberg | 695.14 mi (1,118.71 km) |
