| Titisee-Neustadt to Oria | 691.73 mi (1,113.23 km) |
| Titisee-Neustadt to Oristano | 553.50 mi (890.78 km) |
| Titisee-Neustadt to Orta Nova | 584.82 mi (941.18 km) |
| Titisee-Neustadt to Orte | 427.81 mi (688.50 km) |
| Titisee-Neustadt to Ortona | 488.12 mi (785.56 km) |
| Titisee-Neustadt to Orvieto | 405.59 mi (652.73 km) |
| Titisee-Neustadt to Orzinuovi | 191.75 mi (308.59 km) |
| Titisee-Neustadt to Osimo | 397.65 mi (639.96 km) |
| Titisee-Neustadt to Ospitaletto | 185.10 mi (297.88 km) |
| Titisee-Neustadt to Ostuni | 677.62 mi (1,090.52 km) |
| Titisee-Neustadt to Ottaviano | 577.26 mi (929.00 km) |
| Titisee-Neustadt to Ovada | 227.08 mi (365.45 km) |
| Titisee-Neustadt to Ozieri | 507.76 mi (817.16 km) |
| Titisee-Neustadt to Paceco | 719.90 mi (1,158.56 km) |
| Titisee-Neustadt to Pachino | 848.92 mi (1,366.20 km) |
