| Simi Valley to Octeville | 5,481.66 mi (8,821.87 km) |
| Simi Valley to Oignies | 5,592.19 mi (8,999.76 km) |
| Simi Valley to Oissel | 5,585.47 mi (8,988.94 km) |
| Simi Valley to Olivet | 5,682.83 mi (9,145.63 km) |
| Simi Valley to Ollioules | 6,049.72 mi (9,736.08 km) |
| Simi Valley to Olonne-sur-Mer | 5,619.23 mi (9,043.27 km) |
| Simi Valley to Oloron-Sainte-Marie | 5,817.05 mi (9,361.63 km) |
| Simi Valley to Onet Village | 5,875.99 mi (9,456.50 km) |
| Simi Valley to Onnaing | 5,615.02 mi (9,036.51 km) |
| Simi Valley to Orange | 5,963.92 mi (9,598.00 km) |
| Simi Valley to Orchies | 5,599.76 mi (9,011.94 km) |
| Simi Valley to Orleans | 5,681.25 mi (9,143.09 km) |
| Simi Valley to Orly | 5,656.58 mi (9,103.39 km) |
| Simi Valley to Ormesson-sur-Marne | 5,659.29 mi (9,107.74 km) |
| Simi Valley to Orsay | 5,652.10 mi (9,096.17 km) |
