| Trinity to Oerlinghausen | 4,762.99 mi (7,665.29 km) |
| Trinity to Oestrich-Winkel | 4,780.60 mi (7,693.64 km) |
| Trinity to Offenburg | 4,813.49 mi (7,746.56 km) |
| Trinity to Oftersheim | 4,819.91 mi (7,756.89 km) |
| Trinity to Ohrdruf | 4,873.68 mi (7,843.44 km) |
| Trinity to Ohringen | 4,862.68 mi (7,825.73 km) |
| Trinity to Olbernhau | 4,983.28 mi (8,019.81 km) |
| Trinity to Olching | 4,965.09 mi (7,990.54 km) |
| Trinity to Oldenburg | 4,718.73 mi (7,594.07 km) |
| Trinity to Oldenburg in Holstein | 4,795.51 mi (7,717.63 km) |
| Trinity to Olfen | 4,716.69 mi (7,590.78 km) |
| Trinity to Olpe | 4,750.57 mi (7,645.30 km) |
| Trinity to Olsberg | 4,769.62 mi (7,675.96 km) |
| Trinity to Oranienburg | 4,924.12 mi (7,924.61 km) |
| Trinity to Ortenberg | 4,816.24 mi (7,750.99 km) |
