| Red Bluff to Olympia (Washington) | 475.67 mi (765.52 km) |
| Red Bluff to Olympia Heights (Florida) | 2,597.58 mi (4,180.40 km) |
| Red Bluff to Omaha (Nebraska) | 1,368.30 mi (2,202.06 km) |
| Red Bluff to On Top of the World Designated Place (Florida) | 2,373.75 mi (3,820.18 km) |
| Red Bluff to Onalaska (Wisconsin) | 1,603.55 mi (2,580.67 km) |
| Red Bluff to Oneida (New York) | 2,383.06 mi (3,835.16 km) |
| Red Bluff to Oneonta (New York) | 2,421.57 mi (3,897.13 km) |
| Red Bluff to Ontario (California) | 494.65 mi (796.06 km) |
| Red Bluff to Ontario (Oregon) | 378.94 mi (609.84 km) |
| Red Bluff to Opa-locka (Florida) | 2,595.31 mi (4,176.74 km) |
| Red Bluff to Opelika (Alabama) | 2,098.20 mi (3,376.73 km) |
| Red Bluff to Opelousas (Louisiana) | 1,814.76 mi (2,920.57 km) |
| Red Bluff to Orange (California) | 503.00 mi (809.49 km) |
| Red Bluff to Orange (Texas) | 1,742.62 mi (2,804.47 km) |
| Red Bluff to Orange City (Florida) | 2,432.03 mi (3,913.97 km) |
