| University of California-Santa Barbara to Oerlinghausen | 5,707.90 mi (9,185.98 km) |
| University of California-Santa Barbara to Oestrich-Winkel | 5,791.89 mi (9,321.14 km) |
| University of California-Santa Barbara to Offenburg | 5,869.99 mi (9,446.83 km) |
| University of California-Santa Barbara to Oftersheim | 5,841.90 mi (9,401.63 km) |
| University of California-Santa Barbara to Ohrdruf | 5,825.35 mi (9,374.99 km) |
| University of California-Santa Barbara to Ohringen | 5,877.50 mi (9,458.93 km) |
| University of California-Santa Barbara to Olbernhau | 5,904.22 mi (9,501.93 km) |
| University of California-Santa Barbara to Olching | 5,983.38 mi (9,629.32 km) |
| University of California-Santa Barbara to Oldenburg | 5,633.92 mi (9,066.91 km) |
| University of California-Santa Barbara to Oldenburg in Holstein | 5,643.14 mi (9,081.76 km) |
| University of California-Santa Barbara to Olfen | 5,684.94 mi (9,149.03 km) |
| University of California-Santa Barbara to Olpe | 5,734.08 mi (9,228.12 km) |
| University of California-Santa Barbara to Olsberg | 5,735.11 mi (9,229.77 km) |
| University of California-Santa Barbara to Oranienburg | 5,786.84 mi (9,313.01 km) |
| University of California-Santa Barbara to Ortenberg | 5,803.58 mi (9,339.95 km) |
