| Calheta to Nuth | 1,714.42 mi (2,759.09 km) |
| Calheta to Oegstgeest | 1,724.98 mi (2,776.09 km) |
| Calheta to Oirschot | 1,720.37 mi (2,768.67 km) |
| Calheta to Oisterwijk | 1,720.83 mi (2,769.40 km) |
| Calheta to Oldebroek | 1,782.42 mi (2,868.53 km) |
| Calheta to Oldenzaal | 1,809.98 mi (2,912.88 km) |
| Calheta to Ommen | 1,801.96 mi (2,899.98 km) |
| Calheta to Oosterend | 1,812.79 mi (2,917.41 km) |
| Calheta to Oosterhout | 1,712.40 mi (2,755.83 km) |
| Calheta to Oosterwolde | 1,819.23 mi (2,927.77 km) |
| Calheta to Oostzaan | 1,749.62 mi (2,815.75 km) |
| Calheta to Opmeer | 1,764.15 mi (2,839.13 km) |
| Calheta to Oss | 1,739.37 mi (2,799.25 km) |
| Calheta to Oud-Beijerland | 1,705.78 mi (2,745.19 km) |
| Calheta to Oudenbosch | 1,699.22 mi (2,734.63 km) |
