| Morris to Oerlinghausen | 4,310.50 mi (6,937.08 km) |
| Morris to Oestrich-Winkel | 4,360.29 mi (7,017.21 km) |
| Morris to Offenburg | 4,416.36 mi (7,107.45 km) |
| Morris to Oftersheim | 4,406.12 mi (7,090.96 km) |
| Morris to Ohrdruf | 4,428.23 mi (7,126.56 km) |
| Morris to Ohringen | 4,446.87 mi (7,156.54 km) |
| Morris to Olbernhau | 4,527.40 mi (7,286.14 km) |
| Morris to Olching | 4,554.38 mi (7,329.57 km) |
| Morris to Oldenburg | 4,250.84 mi (6,841.06 km) |
| Morris to Oldenburg in Holstein | 4,299.76 mi (6,919.79 km) |
| Morris to Olfen | 4,273.56 mi (6,877.63 km) |
| Morris to Olpe | 4,315.89 mi (6,945.75 km) |
| Morris to Olsberg | 4,327.04 mi (6,963.70 km) |
| Morris to Oranienburg | 4,439.75 mi (7,145.10 km) |
| Morris to Ortenberg | 4,385.66 mi (7,058.03 km) |
