| Klamath Falls to Oak Harbor (Washington) | 421.93 mi (679.04 km) |
| Klamath Falls to Oak Hills (Oregon) | 235.51 mi (379.02 km) |
| Klamath Falls to Oak Lawn (Illinois) | 1,736.50 mi (2,794.62 km) |
| Klamath Falls to Oak Park (California) | 578.55 mi (931.09 km) |
| Klamath Falls to Oak Park (Illinois) | 1,732.04 mi (2,787.45 km) |
| Klamath Falls to Oak Park (Michigan) | 1,953.70 mi (3,144.18 km) |
| Klamath Falls to Oak Ridge (Florida) | 2,437.04 mi (3,922.04 km) |
| Klamath Falls to Oak Ridge (New Jersey) | 2,411.40 mi (3,880.77 km) |
| Klamath Falls to Oak Ridge (Tennessee) | 2,038.73 mi (3,281.02 km) |
| Klamath Falls to Oakdale (California) | 311.89 mi (501.94 km) |
| Klamath Falls to Oakdale (Minnesota) | 1,446.37 mi (2,327.71 km) |
| Klamath Falls to Oakland (California) | 306.91 mi (493.92 km) |
| Klamath Falls to Oakland (New Jersey) | 2,424.12 mi (3,901.24 km) |
| Klamath Falls to Oakland Park (Florida) | 2,591.53 mi (4,170.67 km) |
| Klamath Falls to Oakleaf Plantation (Florida) | 2,352.35 mi (3,785.74 km) |
