| University to Oerlinghausen | 4,759.33 mi (7,659.41 km) |
| University to Oestrich-Winkel | 4,776.39 mi (7,686.86 km) |
| University to Offenburg | 4,808.88 mi (7,739.14 km) |
| University to Oftersheim | 4,815.57 mi (7,749.91 km) |
| University to Ohrdruf | 4,869.86 mi (7,837.28 km) |
| University to Ohringen | 4,858.35 mi (7,818.76 km) |
| University to Olbernhau | 4,979.58 mi (8,013.85 km) |
| University to Olching | 4,960.63 mi (7,983.36 km) |
| University to Oldenburg | 4,715.37 mi (7,588.65 km) |
| University to Oldenburg in Holstein | 4,792.60 mi (7,712.95 km) |
| University to Olfen | 4,712.90 mi (7,584.68 km) |
| University to Olpe | 4,746.62 mi (7,638.95 km) |
| University to Olsberg | 4,765.79 mi (7,669.80 km) |
| University to Oranienburg | 4,920.95 mi (7,919.51 km) |
| University to Ortenberg | 4,812.19 mi (7,744.47 km) |
