| Rifle to Olympia (Washington) | 918.04 mi (1,477.45 km) |
| Rifle to Olympia Heights (Florida) | 1,848.52 mi (2,974.90 km) |
| Rifle to Omaha (Nebraska) | 627.59 mi (1,010.01 km) |
| Rifle to On Top of the World Designated Place (Florida) | 1,615.30 mi (2,599.57 km) |
| Rifle to Onalaska (Wisconsin) | 903.87 mi (1,454.64 km) |
| Rifle to Oneida (New York) | 1,674.04 mi (2,694.11 km) |
| Rifle to Oneonta (New York) | 1,706.81 mi (2,746.85 km) |
| Rifle to Ontario (California) | 662.91 mi (1,066.85 km) |
| Rifle to Ontario (Oregon) | 566.09 mi (911.04 km) |
| Rifle to Opa-locka (Florida) | 1,845.21 mi (2,969.58 km) |
| Rifle to Opelika (Alabama) | 1,333.07 mi (2,145.37 km) |
| Rifle to Opelousas (Louisiana) | 1,081.71 mi (1,740.84 km) |
| Rifle to Orange (California) | 682.67 mi (1,098.65 km) |
| Rifle to Orange (Texas) | 1,024.74 mi (1,649.16 km) |
| Rifle to Orange City (Florida) | 1,672.29 mi (2,691.28 km) |
