| Sundern to Oerlinghausen | 53.24 mi (85.68 km) |
| Sundern to Oestrich-Winkel | 90.98 mi (146.41 km) |
| Sundern to Offenburg | 196.94 mi (316.94 km) |
| Sundern to Oftersheim | 136.91 mi (220.34 km) |
| Sundern to Ohrdruf | 123.34 mi (198.50 km) |
| Sundern to Ohringen | 160.55 mi (258.38 km) |
| Sundern to Olbernhau | 236.19 mi (380.12 km) |
| Sundern to Olching | 261.26 mi (420.46 km) |
| Sundern to Oldenburg | 126.57 mi (203.70 km) |
| Sundern to Oldenburg in Holstein | 238.68 mi (384.12 km) |
| Sundern to Olfen | 38.30 mi (61.64 km) |
| Sundern to Olpe | 21.95 mi (35.33 km) |
| Sundern to Olsberg | 20.99 mi (33.78 km) |
| Sundern to Oranienburg | 243.67 mi (392.16 km) |
| Sundern to Ortenberg | 80.80 mi (130.03 km) |
