| Hellendoorn to Oerlinghausen | 97.24 mi (156.49 km) |
| Hellendoorn to Oestrich-Winkel | 176.48 mi (284.02 km) |
| Hellendoorn to Offenburg | 277.08 mi (445.91 km) |
| Hellendoorn to Oftersheim | 226.65 mi (364.76 km) |
| Hellendoorn to Ohrdruf | 211.67 mi (340.65 km) |
| Hellendoorn to Ohringen | 255.74 mi (411.58 km) |
| Hellendoorn to Olbernhau | 317.58 mi (511.10 km) |
| Hellendoorn to Olching | 358.62 mi (577.14 km) |
| Hellendoorn to Oldenburg | 90.67 mi (145.92 km) |
| Hellendoorn to Oldenburg in Holstein | 225.87 mi (363.51 km) |
| Hellendoorn to Olfen | 59.45 mi (95.68 km) |
| Hellendoorn to Olpe | 110.12 mi (177.21 km) |
| Hellendoorn to Olsberg | 111.08 mi (178.76 km) |
| Hellendoorn to Oranienburg | 285.52 mi (459.50 km) |
| Hellendoorn to Ortenberg | 178.24 mi (286.84 km) |
