| Grand Junction to Oerlinghausen | 5,104.09 mi (8,214.24 km) |
| Grand Junction to Oestrich-Winkel | 5,177.74 mi (8,332.77 km) |
| Grand Junction to Offenburg | 5,249.39 mi (8,448.07 km) |
| Grand Junction to Oftersheim | 5,226.82 mi (8,411.75 km) |
| Grand Junction to Ohrdruf | 5,222.71 mi (8,405.14 km) |
| Grand Junction to Ohringen | 5,264.38 mi (8,472.20 km) |
| Grand Junction to Olbernhau | 5,309.00 mi (8,544.01 km) |
| Grand Junction to Olching | 5,371.66 mi (8,644.86 km) |
| Grand Junction to Oldenburg | 5,034.07 mi (8,101.55 km) |
| Grand Junction to Oldenburg in Holstein | 5,056.39 mi (8,137.48 km) |
| Grand Junction to Olfen | 5,076.40 mi (8,169.67 km) |
| Grand Junction to Olpe | 5,123.77 mi (8,245.92 km) |
| Grand Junction to Olsberg | 5,128.09 mi (8,252.86 km) |
| Grand Junction to Oranienburg | 5,200.35 mi (8,369.16 km) |
| Grand Junction to Ortenberg | 5,193.96 mi (8,358.87 km) |
