| Avenal to Olympia Heights (Florida) | 2,445.21 mi (3,935.18 km) |
| Avenal to Omaha (Nebraska) | 1,342.99 mi (2,161.34 km) |
| Avenal to On Top of the World Designated Place (Florida) | 2,239.50 mi (3,604.13 km) |
| Avenal to Onalaska (Wisconsin) | 1,614.47 mi (2,598.23 km) |
| Avenal to Oneida (New York) | 2,388.81 mi (3,844.42 km) |
| Avenal to Oneonta (New York) | 2,422.09 mi (3,897.98 km) |
| Avenal to Ontario (California) | 197.72 mi (318.20 km) |
| Avenal to Ontario (Oregon) | 576.71 mi (928.12 km) |
| Avenal to Opa-locka (Florida) | 2,444.43 mi (3,933.94 km) |
| Avenal to Opelika (Alabama) | 1,984.87 mi (3,194.34 km) |
| Avenal to Opelousas (Louisiana) | 1,657.24 mi (2,667.07 km) |
| Avenal to Orange (California) | 201.43 mi (324.17 km) |
| Avenal to Orange (Texas) | 1,574.13 mi (2,533.31 km) |
| Avenal to Orange City (Florida) | 2,299.78 mi (3,701.15 km) |
| Avenal to Orangeburg (South Carolina) | 2,219.76 mi (3,572.35 km) |
