| Slovenj Gradec to Oak Harbor (Washington) | 5,409.45 mi (8,705.66 km) |
| Slovenj Gradec to Oak Hills (Oregon) | 5,582.13 mi (8,983.57 km) |
| Slovenj Gradec to Oak Lawn (Illinois) | 4,723.76 mi (7,602.15 km) |
| Slovenj Gradec to Oak Park (California) | 6,165.98 mi (9,923.19 km) |
| Slovenj Gradec to Oak Park (Illinois) | 4,716.85 mi (7,591.04 km) |
| Slovenj Gradec to Oak Park (Michigan) | 4,516.22 mi (7,268.15 km) |
| Slovenj Gradec to Oak Ridge (Florida) | 5,105.55 mi (8,216.59 km) |
| Slovenj Gradec to Oak Ridge (New Jersey) | 4,235.93 mi (6,817.07 km) |
| Slovenj Gradec to Oak Ridge (Tennessee) | 4,864.64 mi (7,828.88 km) |
| Slovenj Gradec to Oakdale (California) | 6,007.00 mi (9,667.34 km) |
| Slovenj Gradec to Oakdale (Minnesota) | 4,751.52 mi (7,646.83 km) |
| Slovenj Gradec to Oakland (California) | 6,040.67 mi (9,721.52 km) |
| Slovenj Gradec to Oakland (New Jersey) | 4,225.49 mi (6,800.26 km) |
| Slovenj Gradec to Oakland Park (Florida) | 5,161.84 mi (8,307.17 km) |
| Slovenj Gradec to Oakleaf Plantation (Florida) | 5,041.30 mi (8,113.19 km) |
