| Apex to Oak Harbor (Washington) | 2,370.52 mi (3,814.98 km) |
| Apex to Oak Hills (Oregon) | 2,370.61 mi (3,815.13 km) |
| Apex to Oak Lawn (Illinois) | 632.13 mi (1,017.32 km) |
| Apex to Oak Park (California) | 2,246.00 mi (3,614.58 km) |
| Apex to Oak Park (Illinois) | 641.06 mi (1,031.69 km) |
| Apex to Oak Park (Michigan) | 519.73 mi (836.42 km) |
| Apex to Oak Ridge (Florida) | 522.57 mi (840.99 km) |
| Apex to Oak Ridge (New Jersey) | 436.60 mi (702.64 km) |
| Apex to Oak Ridge (Tennessee) | 303.95 mi (489.16 km) |
| Apex to Oakdale (California) | 2,308.63 mi (3,715.38 km) |
| Apex to Oakdale (Minnesota) | 977.28 mi (1,572.78 km) |
| Apex to Oakland (California) | 2,381.99 mi (3,833.45 km) |
| Apex to Oakland (New Jersey) | 444.22 mi (714.90 km) |
| Apex to Oakland Park (Florida) | 663.86 mi (1,068.38 km) |
| Apex to Oakleaf Plantation (Florida) | 420.35 mi (676.48 km) |
