| Glen Allen to Octeville | 3,715.48 mi (5,979.49 km) |
| Glen Allen to Oignies | 3,890.87 mi (6,261.75 km) |
| Glen Allen to Oissel | 3,837.99 mi (6,176.65 km) |
| Glen Allen to Olivet | 3,908.38 mi (6,289.94 km) |
| Glen Allen to Ollioules | 4,214.24 mi (6,782.16 km) |
| Glen Allen to Olonne-sur-Mer | 3,779.16 mi (6,081.97 km) |
| Glen Allen to Oloron-Sainte-Marie | 3,916.39 mi (6,302.82 km) |
| Glen Allen to Onet Village | 4,031.33 mi (6,487.79 km) |
| Glen Allen to Onnaing | 3,917.77 mi (6,305.04 km) |
| Glen Allen to Orange | 4,137.75 mi (6,659.06 km) |
| Glen Allen to Orchies | 3,901.07 mi (6,278.17 km) |
| Glen Allen to Orleans | 3,907.78 mi (6,288.97 km) |
| Glen Allen to Orly | 3,907.63 mi (6,288.72 km) |
| Glen Allen to Ormesson-sur-Marne | 3,912.78 mi (6,297.01 km) |
| Glen Allen to Orsay | 3,900.01 mi (6,276.47 km) |
