| Parker to Oerlinghausen | 4,962.33 mi (7,986.10 km) |
| Parker to Oestrich-Winkel | 5,031.41 mi (8,097.26 km) |
| Parker to Offenburg | 5,100.10 mi (8,207.81 km) |
| Parker to Oftersheim | 5,079.96 mi (8,175.41 km) |
| Parker to Ohrdruf | 5,081.13 mi (8,177.29 km) |
| Parker to Ohringen | 5,118.27 mi (8,237.07 km) |
| Parker to Olbernhau | 5,170.28 mi (8,320.76 km) |
| Parker to Olching | 5,225.90 mi (8,410.28 km) |
| Parker to Oldenburg | 4,894.15 mi (7,876.38 km) |
| Parker to Oldenburg in Holstein | 4,921.84 mi (7,920.94 km) |
| Parker to Olfen | 4,932.70 mi (7,938.41 km) |
| Parker to Olpe | 4,979.20 mi (8,013.25 km) |
| Parker to Olsberg | 4,984.90 mi (8,022.43 km) |
| Parker to Oranienburg | 5,065.50 mi (8,152.13 km) |
| Parker to Ortenberg | 5,049.51 mi (8,126.40 km) |
