| Lake Forest to Oerlinghausen | 5,691.51 mi (9,159.59 km) |
| Lake Forest to Oestrich-Winkel | 5,771.66 mi (9,288.58 km) |
| Lake Forest to Offenburg | 5,847.28 mi (9,410.29 km) |
| Lake Forest to Oftersheim | 5,821.35 mi (9,368.56 km) |
| Lake Forest to Ohrdruf | 5,809.50 mi (9,349.49 km) |
| Lake Forest to Ohringen | 5,857.75 mi (9,427.13 km) |
| Lake Forest to Olbernhau | 5,891.15 mi (9,480.89 km) |
| Lake Forest to Olching | 5,964.26 mi (9,598.56 km) |
| Lake Forest to Oldenburg | 5,618.89 mi (9,042.74 km) |
| Lake Forest to Oldenburg in Holstein | 5,632.77 mi (9,065.06 km) |
| Lake Forest to Olfen | 5,666.75 mi (9,119.76 km) |
| Lake Forest to Olpe | 5,715.27 mi (9,197.84 km) |
| Lake Forest to Olsberg | 5,717.55 mi (9,201.50 km) |
| Lake Forest to Oranienburg | 5,776.71 mi (9,296.72 km) |
| Lake Forest to Ortenberg | 5,785.10 mi (9,310.21 km) |
