| Merriam to Octeville | 4,357.92 mi (7,013.39 km) |
| Merriam to Oignies | 4,504.97 mi (7,250.05 km) |
| Merriam to Oissel | 4,473.74 mi (7,199.80 km) |
| Merriam to Olivet | 4,558.99 mi (7,336.98 km) |
| Merriam to Ollioules | 4,900.55 mi (7,886.67 km) |
| Merriam to Olonne-sur-Mer | 4,460.00 mi (7,177.67 km) |
| Merriam to Oloron-Sainte-Marie | 4,629.99 mi (7,451.24 km) |
| Merriam to Onet Village | 4,718.98 mi (7,594.46 km) |
| Merriam to Onnaing | 4,530.49 mi (7,291.11 km) |
| Merriam to Orange | 4,818.18 mi (7,754.10 km) |
| Merriam to Orchies | 4,514.11 mi (7,264.76 km) |
| Merriam to Orleans | 4,557.89 mi (7,335.22 km) |
| Merriam to Orly | 4,545.61 mi (7,315.45 km) |
| Merriam to Ormesson-sur-Marne | 4,549.66 mi (7,321.97 km) |
| Merriam to Orsay | 4,539.38 mi (7,305.43 km) |
