| Westmont to Oerlinghausen | 5,692.71 mi (9,161.54 km) |
| Westmont to Oestrich-Winkel | 5,774.05 mi (9,292.43 km) |
| Westmont to Offenburg | 5,850.44 mi (9,415.37 km) |
| Westmont to Oftersheim | 5,823.84 mi (9,372.57 km) |
| Westmont to Ohrdruf | 5,810.56 mi (9,351.19 km) |
| Westmont to Ohringen | 5,860.00 mi (9,430.76 km) |
| Westmont to Olbernhau | 5,891.37 mi (9,481.25 km) |
| Westmont to Olching | 5,966.34 mi (9,601.89 km) |
| Westmont to Oldenburg | 5,619.67 mi (9,043.99 km) |
| Westmont to Oldenburg in Holstein | 5,632.13 mi (9,064.04 km) |
| Westmont to Olfen | 5,668.51 mi (9,122.58 km) |
| Westmont to Olpe | 5,717.22 mi (9,200.98 km) |
| Westmont to Olsberg | 5,719.12 mi (9,204.03 km) |
| Westmont to Oranienburg | 5,776.02 mi (9,295.61 km) |
| Westmont to Ortenberg | 5,786.95 mi (9,313.20 km) |
