| Tolmezzo to Oerlinghausen | 431.70 mi (694.76 km) |
| Tolmezzo to Oestrich-Winkel | 339.33 mi (546.10 km) |
| Tolmezzo to Offenburg | 277.11 mi (445.97 km) |
| Tolmezzo to Oftersheim | 290.25 mi (467.11 km) |
| Tolmezzo to Ohrdruf | 323.21 mi (520.15 km) |
| Tolmezzo to Ohringen | 253.06 mi (407.25 km) |
| Tolmezzo to Olbernhau | 295.16 mi (475.01 km) |
| Tolmezzo to Olching | 147.68 mi (237.67 km) |
| Tolmezzo to Oldenburg | 512.60 mi (824.95 km) |
| Tolmezzo to Oldenburg in Holstein | 553.81 mi (891.28 km) |
| Tolmezzo to Olfen | 446.92 mi (719.25 km) |
| Tolmezzo to Olpe | 396.78 mi (638.55 km) |
| Tolmezzo to Olsberg | 399.09 mi (642.27 km) |
| Tolmezzo to Oranienburg | 439.16 mi (706.75 km) |
| Tolmezzo to Ortenberg | 328.15 mi (528.11 km) |
