| Grunheide to Novi di Modena | 537.11 mi (864.40 km) |
| Grunheide to Novi Ligure | 577.20 mi (928.91 km) |
| Grunheide to Nuoro | 863.15 mi (1,389.10 km) |
| Grunheide to Occhiobello | 528.39 mi (850.36 km) |
| Grunheide to Oderzo | 463.01 mi (745.14 km) |
| Grunheide to Oggiono | 501.31 mi (806.78 km) |
| Grunheide to Olbia | 820.78 mi (1,320.92 km) |
| Grunheide to Oleggio | 526.65 mi (847.57 km) |
| Grunheide to Olgiate Comasco | 508.51 mi (818.37 km) |
| Grunheide to Olgiate Olona | 519.62 mi (836.24 km) |
| Grunheide to Omegna | 514.00 mi (827.21 km) |
| Grunheide to Opera | 529.36 mi (851.93 km) |
| Grunheide to Oppeano | 506.64 mi (815.36 km) |
| Grunheide to Orbassano | 586.69 mi (944.19 km) |
| Grunheide to Orbetello | 700.55 mi (1,127.43 km) |
