| Lac to Oignies | 1,003.76 mi (1,615.39 km) |
| Lac to Oissel | 1,043.28 mi (1,679.00 km) |
| Lac to Olivet | 971.15 mi (1,562.92 km) |
| Lac to Ollioules | 714.37 mi (1,149.67 km) |
| Lac to Olonne-sur-Mer | 1,114.73 mi (1,793.98 km) |
| Lac to Oloron-Sainte-Marie | 1,039.52 mi (1,672.94 km) |
| Lac to Onet Village | 883.64 mi (1,422.09 km) |
| Lac to Onnaing | 978.13 mi (1,574.15 km) |
| Lac to Orange | 772.87 mi (1,243.82 km) |
| Lac to Orchies | 994.54 mi (1,600.55 km) |
| Lac to Orleans | 971.69 mi (1,563.78 km) |
| Lac to Orly | 972.70 mi (1,565.40 km) |
| Lac to Ormesson-sur-Marne | 967.82 mi (1,557.56 km) |
| Lac to Orsay | 980.01 mi (1,577.17 km) |
| Lac to Orthez | 1,047.57 mi (1,685.91 km) |
