| Simi Valley to Nuth | 5,658.56 mi (9,106.56 km) |
| Simi Valley to Oegstgeest | 5,553.31 mi (8,937.20 km) |
| Simi Valley to Oirschot | 5,611.96 mi (9,031.58 km) |
| Simi Valley to Oisterwijk | 5,604.83 mi (9,020.11 km) |
| Simi Valley to Oldebroek | 5,582.14 mi (8,983.59 km) |
| Simi Valley to Oldenzaal | 5,618.66 mi (9,042.37 km) |
| Simi Valley to Ommen | 5,593.72 mi (9,002.21 km) |
| Simi Valley to Oosterend | 5,559.19 mi (8,946.65 km) |
| Simi Valley to Oosterhout | 5,591.63 mi (8,998.86 km) |
| Simi Valley to Oosterwolde | 5,566.29 mi (8,958.07 km) |
| Simi Valley to Oostzaan | 5,553.28 mi (8,937.15 km) |
| Simi Valley to Opmeer | 5,542.04 mi (8,919.05 km) |
| Simi Valley to Oss | 5,605.09 mi (9,020.52 km) |
| Simi Valley to Oud-Beijerland | 5,569.38 mi (8,963.05 km) |
| Simi Valley to Oudenbosch | 5,584.31 mi (8,987.09 km) |
