| Heemstede to Orbetello | 750.28 mi (1,207.47 km) |
| Heemstede to Oria | 1,023.66 mi (1,647.42 km) |
| Heemstede to Oristano | 880.28 mi (1,416.67 km) |
| Heemstede to Orta Nova | 922.17 mi (1,484.10 km) |
| Heemstede to Orte | 772.86 mi (1,243.80 km) |
| Heemstede to Ortona | 827.31 mi (1,331.42 km) |
| Heemstede to Orvieto | 750.77 mi (1,208.24 km) |
| Heemstede to Orzinuovi | 537.20 mi (864.54 km) |
| Heemstede to Osimo | 736.30 mi (1,184.96 km) |
| Heemstede to Ospitaletto | 530.39 mi (853.58 km) |
| Heemstede to Ostuni | 1,008.69 mi (1,623.32 km) |
| Heemstede to Ottaviano | 920.32 mi (1,481.11 km) |
| Heemstede to Ovada | 563.58 mi (907.00 km) |
| Heemstede to Ozieri | 838.86 mi (1,350.02 km) |
| Heemstede to Paceco | 1,063.67 mi (1,711.82 km) |
