| On Top of the World Designated Place to Nuth | 4,610.15 mi (7,419.32 km) |
| On Top of the World Designated Place to Oegstgeest | 4,526.00 mi (7,283.90 km) |
| On Top of the World Designated Place to Oirschot | 4,573.81 mi (7,360.84 km) |
| On Top of the World Designated Place to Oisterwijk | 4,567.99 mi (7,351.48 km) |
| On Top of the World Designated Place to Oldebroek | 4,578.51 mi (7,368.40 km) |
| On Top of the World Designated Place to Oldenzaal | 4,622.81 mi (7,439.69 km) |
| On Top of the World Designated Place to Ommen | 4,597.83 mi (7,399.50 km) |
| On Top of the World Designated Place to Oosterend | 4,573.72 mi (7,360.69 km) |
| On Top of the World Designated Place to Oosterhout | 4,552.71 mi (7,326.88 km) |
| On Top of the World Designated Place to Oosterwolde | 4,582.92 mi (7,375.50 km) |
| On Top of the World Designated Place to Oostzaan | 4,537.92 mi (7,303.07 km) |
| On Top of the World Designated Place to Opmeer | 4,535.31 mi (7,298.87 km) |
| On Top of the World Designated Place to Oss | 4,577.16 mi (7,366.22 km) |
| On Top of the World Designated Place to Oud-Beijerland | 4,530.52 mi (7,291.17 km) |
| On Top of the World Designated Place to Oudenbosch | 4,540.13 mi (7,306.63 km) |
