| Fort Lewis to Oerlinghausen | 5,010.21 mi (8,063.15 km) |
| Fort Lewis to Oestrich-Winkel | 5,109.22 mi (8,222.49 km) |
| Fort Lewis to Offenburg | 5,196.99 mi (8,363.75 km) |
| Fort Lewis to Oftersheim | 5,159.94 mi (8,304.12 km) |
| Fort Lewis to Ohrdruf | 5,123.95 mi (8,246.20 km) |
| Fort Lewis to Ohringen | 5,191.70 mi (8,355.24 km) |
| Fort Lewis to Olbernhau | 5,190.74 mi (8,353.68 km) |
| Fort Lewis to Olching | 5,293.53 mi (8,519.12 km) |
| Fort Lewis to Oldenburg | 4,931.49 mi (7,936.47 km) |
| Fort Lewis to Oldenburg in Holstein | 4,922.09 mi (7,921.33 km) |
| Fort Lewis to Olfen | 4,995.01 mi (8,038.69 km) |
| Fort Lewis to Olpe | 5,046.14 mi (8,120.98 km) |
| Fort Lewis to Olsberg | 5,041.94 mi (8,114.21 km) |
| Fort Lewis to Oranienburg | 5,063.19 mi (8,148.41 km) |
| Fort Lewis to Ortenberg | 5,113.35 mi (8,229.15 km) |
