| Van Buren to Oerlinghausen | 4,829.28 mi (7,771.98 km) |
| Van Buren to Oestrich-Winkel | 4,877.58 mi (7,849.70 km) |
| Van Buren to Offenburg | 4,932.23 mi (7,937.66 km) |
| Van Buren to Oftersheim | 4,923.08 mi (7,922.94 km) |
| Van Buren to Ohrdruf | 4,946.86 mi (7,961.21 km) |
| Van Buren to Ohringen | 4,964.02 mi (7,988.83 km) |
| Van Buren to Olbernhau | 5,046.50 mi (8,121.55 km) |
| Van Buren to Olching | 5,071.40 mi (8,161.64 km) |
| Van Buren to Oldenburg | 4,770.08 mi (7,676.70 km) |
| Van Buren to Oldenburg in Holstein | 4,819.52 mi (7,756.27 km) |
| Van Buren to Olfen | 4,791.91 mi (7,711.83 km) |
| Van Buren to Olpe | 4,833.89 mi (7,779.39 km) |
| Van Buren to Olsberg | 4,845.43 mi (7,797.97 km) |
| Van Buren to Oranienburg | 4,959.44 mi (7,981.45 km) |
| Van Buren to Ortenberg | 4,903.55 mi (7,891.50 km) |
