| Gilroy to Nuth | 5,578.56 mi (8,977.83 km) |
| Gilroy to Oegstgeest | 5,472.50 mi (8,807.13 km) |
| Gilroy to Oirschot | 5,531.48 mi (8,902.06 km) |
| Gilroy to Oisterwijk | 5,524.31 mi (8,890.52 km) |
| Gilroy to Oldebroek | 5,497.91 mi (8,848.03 km) |
| Gilroy to Oldenzaal | 5,532.85 mi (8,904.26 km) |
| Gilroy to Ommen | 5,508.33 mi (8,864.80 km) |
| Gilroy to Oosterend | 5,473.13 mi (8,808.15 km) |
| Gilroy to Oosterhout | 5,511.59 mi (8,870.05 km) |
| Gilroy to Oosterwolde | 5,479.84 mi (8,818.96 km) |
| Gilroy to Oostzaan | 5,470.99 mi (8,804.71 km) |
| Gilroy to Opmeer | 5,458.88 mi (8,785.22 km) |
| Gilroy to Oss | 5,523.46 mi (8,889.15 km) |
| Gilroy to Oud-Beijerland | 5,489.72 mi (8,834.85 km) |
| Gilroy to Oudenbosch | 5,505.06 mi (8,859.54 km) |
