| Clearlake to Oerlinghausen | 5,505.75 mi (8,860.65 km) |
| Clearlake to Oestrich-Winkel | 5,597.64 mi (9,008.53 km) |
| Clearlake to Offenburg | 5,680.85 mi (9,142.44 km) |
| Clearlake to Oftersheim | 5,648.14 mi (9,089.81 km) |
| Clearlake to Ohrdruf | 5,621.58 mi (9,047.06 km) |
| Clearlake to Ohringen | 5,681.89 mi (9,144.11 km) |
| Clearlake to Olbernhau | 5,694.33 mi (9,164.15 km) |
| Clearlake to Olching | 5,785.96 mi (9,311.61 km) |
| Clearlake to Oldenburg | 5,429.14 mi (8,737.36 km) |
| Clearlake to Oldenburg in Holstein | 5,428.68 mi (8,736.61 km) |
| Clearlake to Olfen | 5,486.71 mi (8,830.01 km) |
| Clearlake to Olpe | 5,537.00 mi (8,910.93 km) |
| Clearlake to Olsberg | 5,535.35 mi (8,908.29 km) |
| Clearlake to Oranienburg | 5,571.32 mi (8,966.17 km) |
| Clearlake to Ortenberg | 5,605.51 mi (9,021.19 km) |
