| Irving to Nuth | 4,998.31 mi (8,044.01 km) |
| Irving to Oegstgeest | 4,901.79 mi (7,888.66 km) |
| Irving to Oirschot | 4,956.12 mi (7,976.10 km) |
| Irving to Oisterwijk | 4,949.51 mi (7,965.47 km) |
| Irving to Oldebroek | 4,945.10 mi (7,958.38 km) |
| Irving to Oldenzaal | 4,987.28 mi (8,026.25 km) |
| Irving to Ommen | 4,961.50 mi (7,984.76 km) |
| Irving to Oosterend | 4,931.82 mi (7,936.99 km) |
| Irving to Oosterhout | 4,934.70 mi (7,941.63 km) |
| Irving to Oosterwolde | 4,940.35 mi (7,950.73 km) |
| Irving to Oostzaan | 4,908.59 mi (7,899.61 km) |
| Irving to Opmeer | 4,901.92 mi (7,888.88 km) |
| Irving to Oss | 4,954.87 mi (7,974.10 km) |
| Irving to Oud-Beijerland | 4,911.77 mi (7,904.73 km) |
| Irving to Oudenbosch | 4,924.14 mi (7,924.63 km) |
