| Glenpool to Oerlinghausen | 4,861.57 mi (7,823.94 km) |
| Glenpool to Oestrich-Winkel | 4,913.10 mi (7,906.87 km) |
| Glenpool to Offenburg | 4,969.96 mi (7,998.38 km) |
| Glenpool to Oftersheim | 4,959.14 mi (7,980.97 km) |
| Glenpool to Ohrdruf | 4,979.55 mi (8,013.80 km) |
| Glenpool to Ohringen | 4,999.76 mi (8,046.33 km) |
| Glenpool to Olbernhau | 5,077.76 mi (8,171.87 km) |
| Glenpool to Olching | 5,107.36 mi (8,219.49 km) |
| Glenpool to Oldenburg | 4,800.90 mi (7,726.30 km) |
| Glenpool to Oldenburg in Holstein | 4,847.12 mi (7,800.68 km) |
| Glenpool to Olfen | 4,825.31 mi (7,765.58 km) |
| Glenpool to Olpe | 4,868.05 mi (7,834.36 km) |
| Glenpool to Olsberg | 4,878.73 mi (7,851.55 km) |
| Glenpool to Oranienburg | 4,987.86 mi (8,027.19 km) |
| Glenpool to Ortenberg | 4,937.92 mi (7,946.82 km) |
