| State College to Oerlinghausen | 3,946.71 mi (6,351.61 km) |
| State College to Oestrich-Winkel | 3,980.75 mi (6,406.40 km) |
| State College to Offenburg | 4,026.17 mi (6,479.50 km) |
| State College to Oftersheim | 4,023.75 mi (6,475.61 km) |
| State College to Ohrdruf | 4,061.67 mi (6,536.63 km) |
| State College to Ohringen | 4,065.77 mi (6,543.23 km) |
| State College to Olbernhau | 4,166.85 mi (6,705.90 km) |
| State College to Olching | 4,171.61 mi (6,713.55 km) |
| State College to Oldenburg | 3,894.66 mi (6,267.86 km) |
| State College to Oldenburg in Holstein | 3,959.00 mi (6,371.40 km) |
| State College to Olfen | 3,904.72 mi (6,284.05 km) |
| State College to Olpe | 3,943.11 mi (6,345.82 km) |
| State College to Olsberg | 3,958.31 mi (6,370.29 km) |
| State College to Oranienburg | 4,093.69 mi (6,588.15 km) |
| State College to Ortenberg | 4,011.34 mi (6,455.63 km) |
