| Iselin to Oerlinghausen | 3,820.11 mi (6,147.88 km) |
| Iselin to Oestrich-Winkel | 3,848.67 mi (6,193.83 km) |
| Iselin to Offenburg | 3,890.33 mi (6,260.88 km) |
| Iselin to Oftersheim | 3,890.58 mi (6,261.28 km) |
| Iselin to Ohrdruf | 3,933.76 mi (6,330.77 km) |
| Iselin to Ohringen | 3,932.90 mi (6,329.39 km) |
| Iselin to Olbernhau | 4,040.64 mi (6,502.78 km) |
| Iselin to Olching | 4,037.86 mi (6,498.30 km) |
| Iselin to Oldenburg | 3,770.86 mi (6,068.61 km) |
| Iselin to Oldenburg in Holstein | 3,840.26 mi (6,180.29 km) |
| Iselin to Olfen | 3,776.54 mi (6,077.76 km) |
| Iselin to Olpe | 3,813.45 mi (6,137.16 km) |
| Iselin to Olsberg | 3,829.99 mi (6,163.77 km) |
| Iselin to Oranienburg | 3,972.64 mi (6,393.34 km) |
| Iselin to Ortenberg | 3,880.95 mi (6,245.78 km) |
