| Monte San Pietro to Oegstgeest | 616.31 mi (991.86 km) |
| Monte San Pietro to Oirschot | 557.42 mi (897.07 km) |
| Monte San Pietro to Oisterwijk | 564.57 mi (908.59 km) |
| Monte San Pietro to Oldebroek | 602.84 mi (970.17 km) |
| Monte San Pietro to Oldenzaal | 576.94 mi (928.49 km) |
| Monte San Pietro to Ommen | 598.00 mi (962.39 km) |
| Monte San Pietro to Oosterend | 634.69 mi (1,021.44 km) |
| Monte San Pietro to Oosterhout | 575.93 mi (926.87 km) |
| Monte San Pietro to Oosterwolde | 630.18 mi (1,014.17 km) |
| Monte San Pietro to Oostzaan | 621.89 mi (1,000.83 km) |
| Monte San Pietro to Opmeer | 636.53 mi (1,024.40 km) |
| Monte San Pietro to Oss | 568.56 mi (915.01 km) |
| Monte San Pietro to Oud-Beijerland | 596.74 mi (960.36 km) |
| Monte San Pietro to Oudenbosch | 580.77 mi (934.66 km) |
| Monte San Pietro to Oudewater | 597.54 mi (961.64 km) |
