| Heinola to Oegstgeest | 1,020.41 mi (1,642.19 km) |
| Heinola to Oirschot | 1,030.94 mi (1,659.14 km) |
| Heinola to Oisterwijk | 1,029.50 mi (1,656.82 km) |
| Heinola to Oldebroek | 965.26 mi (1,553.44 km) |
| Heinola to Oldenzaal | 942.50 mi (1,516.80 km) |
| Heinola to Ommen | 947.02 mi (1,524.08 km) |
| Heinola to Oosterend | 932.94 mi (1,501.42 km) |
| Heinola to Oosterhout | 1,036.28 mi (1,667.74 km) |
| Heinola to Oosterwolde | 927.02 mi (1,491.89 km) |
| Heinola to Oostzaan | 995.76 mi (1,602.52 km) |
| Heinola to Opmeer | 980.68 mi (1,578.25 km) |
| Heinola to Oss | 1,011.00 mi (1,627.05 km) |
| Heinola to Oud-Beijerland | 1,040.72 mi (1,674.88 km) |
| Heinola to Oudenbosch | 1,048.66 mi (1,687.65 km) |
| Heinola to Oudewater | 1,017.04 mi (1,636.76 km) |
