| Highlands Ranch to Noventa Vicentina | 5,379.78 mi (8,657.92 km) |
| Highlands Ranch to Novi di Modena | 5,376.98 mi (8,653.41 km) |
| Highlands Ranch to Novi Ligure | 5,309.07 mi (8,544.12 km) |
| Highlands Ranch to Nuoro | 5,542.49 mi (8,919.77 km) |
| Highlands Ranch to Occhiobello | 5,399.14 mi (8,689.08 km) |
| Highlands Ranch to Oderzo | 5,387.96 mi (8,671.09 km) |
| Highlands Ranch to Oggiono | 5,280.12 mi (8,497.52 km) |
| Highlands Ranch to Olbia | 5,519.66 mi (8,883.03 km) |
| Highlands Ranch to Oleggio | 5,263.75 mi (8,471.18 km) |
| Highlands Ranch to Olgiate Comasco | 5,266.74 mi (8,476.00 km) |
| Highlands Ranch to Olgiate Olona | 5,270.95 mi (8,482.77 km) |
| Highlands Ranch to Omegna | 5,242.63 mi (8,437.20 km) |
| Highlands Ranch to Opera | 5,294.55 mi (8,520.75 km) |
| Highlands Ranch to Oppeano | 5,366.93 mi (8,637.24 km) |
| Highlands Ranch to Orbassano | 5,252.75 mi (8,453.48 km) |
