| Cottage Grove to Oerlinghausen | 4,293.40 mi (6,909.56 km) |
| Cottage Grove to Oestrich-Winkel | 4,355.07 mi (7,008.81 km) |
| Cottage Grove to Offenburg | 4,419.23 mi (7,112.07 km) |
| Cottage Grove to Oftersheim | 4,402.72 mi (7,085.49 km) |
| Cottage Grove to Ohrdruf | 4,412.12 mi (7,100.62 km) |
| Cottage Grove to Ohringen | 4,442.06 mi (7,148.80 km) |
| Cottage Grove to Olbernhau | 4,505.67 mi (7,251.18 km) |
| Cottage Grove to Olching | 4,549.92 mi (7,322.39 km) |
| Cottage Grove to Oldenburg | 4,228.52 mi (6,805.14 km) |
| Cottage Grove to Oldenburg in Holstein | 4,265.39 mi (6,864.49 km) |
| Cottage Grove to Olfen | 4,260.75 mi (6,857.01 km) |
| Cottage Grove to Olpe | 4,305.74 mi (6,929.42 km) |
| Cottage Grove to Olsberg | 4,313.61 mi (6,942.09 km) |
| Cottage Grove to Oranienburg | 4,407.92 mi (7,093.87 km) |
| Cottage Grove to Ortenberg | 4,376.03 mi (7,042.54 km) |
