| Harstad to Oak Harbor (Washington) | 4,081.17 mi (6,568.01 km) |
| Harstad to Oak Hills (Oregon) | 4,267.10 mi (6,867.24 km) |
| Harstad to Oak Lawn (Illinois) | 3,895.28 mi (6,268.84 km) |
| Harstad to Oak Park (California) | 4,965.70 mi (7,991.52 km) |
| Harstad to Oak Park (Illinois) | 3,885.22 mi (6,252.66 km) |
| Harstad to Oak Park (Michigan) | 3,747.65 mi (6,031.26 km) |
| Harstad to Oak Ridge (Florida) | 4,587.34 mi (7,382.61 km) |
| Harstad to Oak Ridge (New Jersey) | 3,635.66 mi (5,851.03 km) |
| Harstad to Oak Ridge (Tennessee) | 4,179.79 mi (6,726.72 km) |
| Harstad to Oakdale (California) | 4,758.22 mi (7,657.61 km) |
| Harstad to Oakdale (Minnesota) | 3,799.49 mi (6,114.69 km) |
| Harstad to Oakland (California) | 4,775.67 mi (7,685.70 km) |
| Harstad to Oakland (New Jersey) | 3,629.64 mi (5,841.35 km) |
| Harstad to Oakland Park (Florida) | 4,703.22 mi (7,569.10 km) |
| Harstad to Oakleaf Plantation (Florida) | 4,489.42 mi (7,225.03 km) |
