| Somerset to Octeville | 3,468.93 mi (5,582.71 km) |
| Somerset to Oignies | 3,642.26 mi (5,861.64 km) |
| Somerset to Oissel | 3,591.05 mi (5,779.23 km) |
| Somerset to Olivet | 3,662.95 mi (5,894.95 km) |
| Somerset to Ollioules | 3,973.47 mi (6,394.67 km) |
| Somerset to Olonne-sur-Mer | 3,536.88 mi (5,692.06 km) |
| Somerset to Oloron-Sainte-Marie | 3,678.98 mi (5,920.75 km) |
| Somerset to Onet Village | 3,790.40 mi (6,100.06 km) |
| Somerset to Onnaing | 3,669.09 mi (5,904.83 km) |
| Somerset to Orange | 3,896.08 mi (6,270.14 km) |
| Somerset to Orchies | 3,652.39 mi (5,877.96 km) |
| Somerset to Orleans | 3,662.30 mi (5,893.91 km) |
| Somerset to Orly | 3,660.99 mi (5,891.80 km) |
| Somerset to Ormesson-sur-Marne | 3,666.05 mi (5,899.94 km) |
| Somerset to Orsay | 3,653.49 mi (5,879.73 km) |
