| Carlsbad to Opwijk | 5,625.68 mi (9,053.66 km) |
| Carlsbad to Ostend | 5,573.49 mi (8,969.66 km) |
| Carlsbad to Oud-Heverlee | 5,647.25 mi (9,088.37 km) |
| Carlsbad to Oud-Turnhout | 5,633.82 mi (9,066.76 km) |
| Carlsbad to Oudenaarde | 5,612.82 mi (9,032.96 km) |
| Carlsbad to Oudenburg | 5,578.04 mi (8,976.99 km) |
| Carlsbad to Oupeye | 5,683.75 mi (9,147.11 km) |
| Carlsbad to Overijse | 5,645.47 mi (9,085.50 km) |
| Carlsbad to Overpelt | 5,652.04 mi (9,096.07 km) |
| Carlsbad to Paal | 5,653.10 mi (9,097.78 km) |
| Carlsbad to Peer | 5,657.25 mi (9,104.46 km) |
| Carlsbad to Pepinster | 5,696.04 mi (9,166.90 km) |
| Carlsbad to Peruwelz | 5,628.10 mi (9,057.55 km) |
| Carlsbad to Perwez | 5,661.97 mi (9,112.06 km) |
| Carlsbad to Philippeville | 5,674.02 mi (9,131.44 km) |
