| Wheaton to Oerlinghausen | 4,274.99 mi (6,879.93 km) |
| Wheaton to Oestrich-Winkel | 4,325.21 mi (6,960.75 km) |
| Wheaton to Offenburg | 4,381.61 mi (7,051.52 km) |
| Wheaton to Oftersheim | 4,371.11 mi (7,034.63 km) |
| Wheaton to Ohrdruf | 4,392.77 mi (7,069.49 km) |
| Wheaton to Ohringen | 4,411.81 mi (7,100.13 km) |
| Wheaton to Olbernhau | 4,491.76 mi (7,228.79 km) |
| Wheaton to Olching | 4,519.36 mi (7,273.21 km) |
| Wheaton to Oldenburg | 4,215.15 mi (6,783.63 km) |
| Wheaton to Oldenburg in Holstein | 4,263.71 mi (6,861.78 km) |
| Wheaton to Olfen | 4,238.19 mi (6,820.71 km) |
| Wheaton to Olpe | 4,280.62 mi (6,888.99 km) |
| Wheaton to Olsberg | 4,291.66 mi (6,906.76 km) |
| Wheaton to Oranienburg | 4,403.80 mi (7,087.23 km) |
| Wheaton to Ortenberg | 4,350.42 mi (7,001.32 km) |
