| Holbaek to Oria | 1,085.12 mi (1,746.32 km) |
| Holbaek to Oristano | 1,101.68 mi (1,772.99 km) |
| Holbaek to Orta Nova | 1,010.09 mi (1,625.59 km) |
| Holbaek to Orte | 916.33 mi (1,474.70 km) |
| Holbaek to Ortona | 931.22 mi (1,498.66 km) |
| Holbaek to Orvieto | 898.19 mi (1,445.50 km) |
| Holbaek to Orzinuovi | 716.99 mi (1,153.88 km) |
| Holbaek to Osimo | 848.77 mi (1,365.96 km) |
| Holbaek to Ospitaletto | 705.67 mi (1,135.66 km) |
| Holbaek to Ostuni | 1,068.81 mi (1,720.08 km) |
| Holbaek to Ottaviano | 1,034.69 mi (1,665.17 km) |
| Holbaek to Ovada | 777.12 mi (1,250.65 km) |
| Holbaek to Ozieri | 1,052.71 mi (1,694.17 km) |
| Holbaek to Paceco | 1,225.78 mi (1,972.71 km) |
| Holbaek to Pachino | 1,322.20 mi (2,127.88 km) |
