| Summerlin South to Octeville | 5,263.35 mi (8,470.55 km) |
| Summerlin South to Oignies | 5,377.76 mi (8,654.67 km) |
| Summerlin South to Oissel | 5,368.54 mi (8,639.84 km) |
| Summerlin South to Olivet | 5,464.90 mi (8,794.90 km) |
| Summerlin South to Ollioules | 5,829.95 mi (9,382.39 km) |
| Summerlin South to Olonne-sur-Mer | 5,397.83 mi (8,686.96 km) |
| Summerlin South to Oloron-Sainte-Marie | 5,593.44 mi (9,001.77 km) |
| Summerlin South to Onet Village | 5,655.19 mi (9,101.16 km) |
| Summerlin South to Onnaing | 5,400.92 mi (8,691.95 km) |
| Summerlin South to Orange | 5,744.34 mi (9,244.62 km) |
| Summerlin South to Orchies | 5,385.51 mi (8,667.14 km) |
| Summerlin South to Orleans | 5,463.36 mi (8,792.43 km) |
| Summerlin South to Orly | 5,439.88 mi (8,754.63 km) |
| Summerlin South to Ormesson-sur-Marne | 5,442.72 mi (8,759.21 km) |
| Summerlin South to Orsay | 5,435.21 mi (8,747.12 km) |
