| Idil to Nuth | 1,990.12 mi (3,202.78 km) |
| Idil to Oegstgeest | 2,070.81 mi (3,332.64 km) |
| Idil to Oirschot | 2,024.50 mi (3,258.12 km) |
| Idil to Oisterwijk | 2,030.10 mi (3,267.12 km) |
| Idil to Oldebroek | 2,017.52 mi (3,246.88 km) |
| Idil to Oldenzaal | 1,973.17 mi (3,175.50 km) |
| Idil to Ommen | 1,998.09 mi (3,215.61 km) |
| Idil to Oosterend | 2,022.23 mi (3,254.47 km) |
| Idil to Oosterhout | 2,045.38 mi (3,291.72 km) |
| Idil to Oosterwolde | 2,013.05 mi (3,239.69 km) |
| Idil to Oostzaan | 2,058.33 mi (3,312.56 km) |
| Idil to Opmeer | 2,060.66 mi (3,316.32 km) |
| Idil to Oss | 2,020.21 mi (3,251.22 km) |
| Idil to Oud-Beijerland | 2,067.27 mi (3,326.95 km) |
| Idil to Oudenbosch | 2,058.34 mi (3,312.58 km) |
