| Providence to Oerlinghausen | 3,649.68 mi (5,873.59 km) |
| Providence to Oestrich-Winkel | 3,676.95 mi (5,917.48 km) |
| Providence to Offenburg | 3,717.88 mi (5,983.36 km) |
| Providence to Oftersheim | 3,718.63 mi (5,984.56 km) |
| Providence to Ohrdruf | 3,762.97 mi (6,055.91 km) |
| Providence to Ohringen | 3,761.01 mi (6,052.76 km) |
| Providence to Olbernhau | 3,870.25 mi (6,228.56 km) |
| Providence to Olching | 3,865.77 mi (6,221.36 km) |
| Providence to Oldenburg | 3,601.19 mi (5,795.56 km) |
| Providence to Oldenburg in Holstein | 3,672.06 mi (5,909.60 km) |
| Providence to Olfen | 3,605.73 mi (5,802.86 km) |
| Providence to Olpe | 3,642.28 mi (5,861.68 km) |
| Providence to Olsberg | 3,659.12 mi (5,888.79 km) |
| Providence to Oranienburg | 3,803.69 mi (6,121.45 km) |
| Providence to Ortenberg | 3,709.59 mi (5,970.00 km) |
