| Glarus to Octeville | 523.02 mi (841.72 km) |
| Glarus to Oignies | 364.34 mi (586.35 km) |
| Glarus to Oissel | 400.25 mi (644.14 km) |
| Glarus to Olivet | 339.58 mi (546.51 km) |
| Glarus to Ollioules | 311.47 mi (501.26 km) |
| Glarus to Olonne-sur-Mer | 513.56 mi (826.50 km) |
| Glarus to Oloron-Sainte-Marie | 540.58 mi (869.99 km) |
| Glarus to Onet Village | 362.52 mi (583.42 km) |
| Glarus to Onnaing | 340.25 mi (547.58 km) |
| Glarus to Orange | 286.94 mi (461.79 km) |
| Glarus to Orchies | 356.02 mi (572.95 km) |
| Glarus to Orleans | 339.54 mi (546.43 km) |
| Glarus to Orly | 330.89 mi (532.52 km) |
| Glarus to Ormesson-sur-Marne | 325.56 mi (523.94 km) |
| Glarus to Orsay | 338.83 mi (545.30 km) |
