| Tettnang to Novi di Modena | 201.88 mi (324.90 km) |
| Tettnang to Novi Ligure | 204.79 mi (329.58 km) |
| Tettnang to Nuoro | 508.28 mi (817.99 km) |
| Tettnang to Occhiobello | 212.44 mi (341.89 km) |
| Tettnang to Oderzo | 189.68 mi (305.26 km) |
| Tettnang to Oggiono | 130.90 mi (210.66 km) |
| Tettnang to Olbia | 466.68 mi (751.05 km) |
| Tettnang to Oleggio | 150.07 mi (241.51 km) |
| Tettnang to Olgiate Comasco | 133.69 mi (215.15 km) |
| Tettnang to Olgiate Olona | 144.68 mi (232.85 km) |
| Tettnang to Omegna | 135.88 mi (218.67 km) |
| Tettnang to Opera | 159.03 mi (255.93 km) |
| Tettnang to Oppeano | 180.53 mi (290.54 km) |
| Tettnang to Orbassano | 208.39 mi (335.37 km) |
| Tettnang to Orbetello | 370.03 mi (595.51 km) |
