| Oldsmar to Nuth | 4,679.26 mi (7,530.54 km) |
| Oldsmar to Oegstgeest | 4,595.70 mi (7,396.06 km) |
| Oldsmar to Oirschot | 4,643.20 mi (7,472.51 km) |
| Oldsmar to Oisterwijk | 4,637.42 mi (7,463.20 km) |
| Oldsmar to Oldebroek | 4,648.50 mi (7,481.04 km) |
| Oldsmar to Oldenzaal | 4,692.84 mi (7,552.40 km) |
| Oldsmar to Ommen | 4,667.92 mi (7,512.29 km) |
| Oldsmar to Oosterend | 4,644.04 mi (7,473.86 km) |
| Oldsmar to Oosterhout | 4,622.13 mi (7,438.60 km) |
| Oldsmar to Oosterwolde | 4,653.26 mi (7,488.69 km) |
| Oldsmar to Oostzaan | 4,607.80 mi (7,415.53 km) |
| Oldsmar to Opmeer | 4,605.34 mi (7,411.59 km) |
| Oldsmar to Oss | 4,646.72 mi (7,478.17 km) |
| Oldsmar to Oud-Beijerland | 4,599.99 mi (7,402.97 km) |
| Oldsmar to Oudenbosch | 4,609.48 mi (7,418.25 km) |
