| Lake Butler to Oerlinghausen | 4,702.39 mi (7,567.77 km) |
| Lake Butler to Oestrich-Winkel | 4,718.68 mi (7,593.98 km) |
| Lake Butler to Offenburg | 4,750.65 mi (7,645.43 km) |
| Lake Butler to Oftersheim | 4,757.68 mi (7,656.75 km) |
| Lake Butler to Ohrdruf | 4,812.66 mi (7,745.23 km) |
| Lake Butler to Ohringen | 4,800.48 mi (7,725.63 km) |
| Lake Butler to Olbernhau | 4,922.56 mi (7,922.09 km) |
| Lake Butler to Olching | 4,902.58 mi (7,889.95 km) |
| Lake Butler to Oldenburg | 4,658.86 mi (7,497.71 km) |
| Lake Butler to Oldenburg in Holstein | 4,736.81 mi (7,623.15 km) |
| Lake Butler to Olfen | 4,655.76 mi (7,492.72 km) |
| Lake Butler to Olpe | 4,689.25 mi (7,546.62 km) |
| Lake Butler to Olsberg | 4,708.60 mi (7,577.76 km) |
| Lake Butler to Oranienburg | 4,864.73 mi (7,829.03 km) |
| Lake Butler to Ortenberg | 4,754.68 mi (7,651.92 km) |
