| Klamath Falls to Opwijk | 5,225.83 mi (8,410.17 km) |
| Klamath Falls to Ostend | 5,177.60 mi (8,332.53 km) |
| Klamath Falls to Oud-Heverlee | 5,246.08 mi (8,442.74 km) |
| Klamath Falls to Oud-Turnhout | 5,228.12 mi (8,413.85 km) |
| Klamath Falls to Oudenaarde | 5,216.36 mi (8,394.93 km) |
| Klamath Falls to Oudenburg | 5,182.07 mi (8,339.74 km) |
| Klamath Falls to Oupeye | 5,278.93 mi (8,495.62 km) |
| Klamath Falls to Overijse | 5,245.22 mi (8,441.37 km) |
| Klamath Falls to Overpelt | 5,245.03 mi (8,441.07 km) |
| Klamath Falls to Paal | 5,248.32 mi (8,446.35 km) |
| Klamath Falls to Peer | 5,250.61 mi (8,450.04 km) |
| Klamath Falls to Pepinster | 5,291.33 mi (8,515.57 km) |
| Klamath Falls to Peruwelz | 5,233.91 mi (8,423.17 km) |
| Klamath Falls to Perwez | 5,261.47 mi (8,467.52 km) |
| Klamath Falls to Philippeville | 5,277.46 mi (8,493.26 km) |
