| Morro Bay to Orangevale (California) | 230.30 mi (370.63 km) |
| Morro Bay to Orchards (Washington) | 718.50 mi (1,156.32 km) |
| Morro Bay to Orcutt (California) | 42.06 mi (67.68 km) |
| Morro Bay to Oregon (Ohio) | 2,052.12 mi (3,302.58 km) |
| Morro Bay to Oregon (Wisconsin) | 1,753.01 mi (2,821.19 km) |
| Morro Bay to Oregon City (Oregon) | 695.15 mi (1,118.74 km) |
| Morro Bay to Orem (Utah) | 603.86 mi (971.81 km) |
| Morro Bay to Orinda (California) | 188.63 mi (303.57 km) |
| Morro Bay to Orland Park (Illinois) | 1,823.36 mi (2,934.42 km) |
| Morro Bay to Orlando (Florida) | 2,349.50 mi (3,781.16 km) |
| Morro Bay to Ormond Beach (Florida) | 2,342.11 mi (3,769.26 km) |
| Morro Bay to Oro Valley (Arizona) | 601.32 mi (967.73 km) |
| Morro Bay to Oroville (California) | 288.15 mi (463.74 km) |
| Morro Bay to Oshkosh (Wisconsin) | 1,803.98 mi (2,903.22 km) |
| Morro Bay to Oskaloosa (Iowa) | 1,574.99 mi (2,534.71 km) |
