| Dun Dealgan to Oerlinghausen | 641.23 mi (1,031.96 km) |
| Dun Dealgan to Oestrich-Winkel | 670.81 mi (1,079.57 km) |
| Dun Dealgan to Offenburg | 726.93 mi (1,169.89 km) |
| Dun Dealgan to Oftersheim | 715.66 mi (1,151.74 km) |
| Dun Dealgan to Ohrdruf | 752.71 mi (1,211.37 km) |
| Dun Dealgan to Ohringen | 756.85 mi (1,218.04 km) |
| Dun Dealgan to Olbernhau | 861.50 mi (1,386.45 km) |
| Dun Dealgan to Olching | 864.00 mi (1,390.47 km) |
| Dun Dealgan to Oldenburg | 601.61 mi (968.19 km) |
| Dun Dealgan to Oldenburg in Holstein | 698.04 mi (1,123.38 km) |
| Dun Dealgan to Olfen | 595.48 mi (958.33 km) |
| Dun Dealgan to Olpe | 632.08 mi (1,017.24 km) |
| Dun Dealgan to Olsberg | 648.76 mi (1,044.07 km) |
| Dun Dealgan to Oranienburg | 811.47 mi (1,305.94 km) |
| Dun Dealgan to Ortenberg | 700.14 mi (1,126.77 km) |
