| Cottage Lake to Oerlinghausen | 4,959.72 mi (7,981.90 km) |
| Cottage Lake to Oestrich-Winkel | 5,058.80 mi (8,141.35 km) |
| Cottage Lake to Offenburg | 5,146.63 mi (8,282.69 km) |
| Cottage Lake to Oftersheim | 5,109.52 mi (8,222.98 km) |
| Cottage Lake to Ohrdruf | 5,073.45 mi (8,164.93 km) |
| Cottage Lake to Ohringen | 5,141.26 mi (8,274.06 km) |
| Cottage Lake to Olbernhau | 5,140.21 mi (8,272.37 km) |
| Cottage Lake to Olching | 5,243.07 mi (8,437.90 km) |
| Cottage Lake to Oldenburg | 4,880.99 mi (7,855.20 km) |
| Cottage Lake to Oldenburg in Holstein | 4,871.56 mi (7,840.03 km) |
| Cottage Lake to Olfen | 4,944.56 mi (7,957.49 km) |
| Cottage Lake to Olpe | 4,995.69 mi (8,039.79 km) |
| Cottage Lake to Olsberg | 4,991.47 mi (8,032.99 km) |
| Cottage Lake to Oranienburg | 5,012.67 mi (8,067.11 km) |
| Cottage Lake to Ortenberg | 5,062.89 mi (8,147.94 km) |
