| Lake Ronkonkoma to Oerlinghausen | 3,761.05 mi (6,052.83 km) |
| Lake Ronkonkoma to Oestrich-Winkel | 3,788.46 mi (6,096.94 km) |
| Lake Ronkonkoma to Offenburg | 3,829.37 mi (6,162.78 km) |
| Lake Ronkonkoma to Oftersheim | 3,830.15 mi (6,164.02 km) |
| Lake Ronkonkoma to Ohrdruf | 3,874.39 mi (6,235.23 km) |
| Lake Ronkonkoma to Ohringen | 3,872.52 mi (6,232.22 km) |
| Lake Ronkonkoma to Olbernhau | 3,981.61 mi (6,407.79 km) |
| Lake Ronkonkoma to Olching | 3,977.28 mi (6,400.82 km) |
| Lake Ronkonkoma to Oldenburg | 3,712.41 mi (5,974.55 km) |
| Lake Ronkonkoma to Oldenburg in Holstein | 3,782.91 mi (6,088.01 km) |
| Lake Ronkonkoma to Olfen | 3,717.16 mi (5,982.19 km) |
| Lake Ronkonkoma to Olpe | 3,753.75 mi (6,041.08 km) |
| Lake Ronkonkoma to Olsberg | 3,770.56 mi (6,068.13 km) |
| Lake Ronkonkoma to Oranienburg | 3,914.75 mi (6,300.18 km) |
| Lake Ronkonkoma to Ortenberg | 3,821.08 mi (6,149.43 km) |
