| Riverbank to Olympia (Washington) | 651.26 mi (1,048.10 km) |
| Riverbank to Olympia Heights (Florida) | 2,503.79 mi (4,029.46 km) |
| Riverbank to Omaha (Nebraska) | 1,344.60 mi (2,163.93 km) |
| Riverbank to On Top of the World Designated Place (Florida) | 2,290.08 mi (3,685.52 km) |
| Riverbank to Onalaska (Wisconsin) | 1,602.70 mi (2,579.30 km) |
| Riverbank to Oneida (New York) | 2,381.68 mi (3,832.94 km) |
| Riverbank to Oneonta (New York) | 2,417.17 mi (3,890.05 km) |
| Riverbank to Ontario (California) | 315.83 mi (508.27 km) |
| Riverbank to Ontario (Oregon) | 481.95 mi (775.63 km) |
| Riverbank to Opa-locka (Florida) | 2,502.38 mi (4,027.19 km) |
| Riverbank to Opelika (Alabama) | 2,026.04 mi (3,260.60 km) |
| Riverbank to Opelousas (Louisiana) | 1,716.28 mi (2,762.09 km) |
| Riverbank to Orange (California) | 322.54 mi (519.08 km) |
| Riverbank to Orange (Texas) | 1,637.65 mi (2,635.54 km) |
| Riverbank to Orange City (Florida) | 2,349.63 mi (3,781.36 km) |
