| Eau Claire to Orbetello | 4,758.35 mi (7,657.83 km) |
| Eau Claire to Oria | 5,090.65 mi (8,192.60 km) |
| Eau Claire to Oristano | 4,773.64 mi (7,682.44 km) |
| Eau Claire to Orta Nova | 4,979.18 mi (8,013.22 km) |
| Eau Claire to Orte | 4,801.57 mi (7,727.38 km) |
| Eau Claire to Ortona | 4,881.70 mi (7,856.34 km) |
| Eau Claire to Orvieto | 4,779.18 mi (7,691.34 km) |
| Eau Claire to Orzinuovi | 4,575.44 mi (7,363.46 km) |
| Eau Claire to Osimo | 4,794.23 mi (7,715.57 km) |
| Eau Claire to Ospitaletto | 4,573.61 mi (7,360.52 km) |
| Eau Claire to Ostuni | 5,077.28 mi (8,171.10 km) |
| Eau Claire to Ottaviano | 4,956.45 mi (7,976.63 km) |
| Eau Claire to Ovada | 4,561.58 mi (7,341.16 km) |
| Eau Claire to Ozieri | 4,758.72 mi (7,658.41 km) |
| Eau Claire to Paceco | 5,019.97 mi (8,078.86 km) |
