| Radovljica to Olympia Heights (Florida) | 5,156.22 mi (8,298.14 km) |
| Radovljica to Omaha (Nebraska) | 5,021.54 mi (8,081.39 km) |
| Radovljica to On Top of the World Designated Place (Florida) | 5,078.14 mi (8,172.47 km) |
| Radovljica to Onalaska (Wisconsin) | 4,719.68 mi (7,595.59 km) |
| Radovljica to Oneida (New York) | 4,165.77 mi (6,704.17 km) |
| Radovljica to Oneonta (New York) | 4,167.85 mi (6,707.50 km) |
| Radovljica to Ontario (California) | 6,124.01 mi (9,855.64 km) |
| Radovljica to Ontario (Oregon) | 5,517.26 mi (8,879.17 km) |
| Radovljica to Opa-locka (Florida) | 5,144.01 mi (8,278.48 km) |
| Radovljica to Opelika (Alabama) | 5,036.96 mi (8,106.20 km) |
| Radovljica to Opelousas (Louisiana) | 5,417.13 mi (8,718.02 km) |
| Radovljica to Orange (California) | 6,144.31 mi (9,888.32 km) |
| Radovljica to Orange (Texas) | 5,505.03 mi (8,859.49 km) |
| Radovljica to Orange City (Florida) | 5,043.11 mi (8,116.11 km) |
| Radovljica to Orangeburg (South Carolina) | 4,808.48 mi (7,738.50 km) |
