| Johnstown to Nuth | 3,932.53 mi (6,328.79 km) |
| Johnstown to Oegstgeest | 3,841.14 mi (6,181.71 km) |
| Johnstown to Oirschot | 3,892.76 mi (6,264.79 km) |
| Johnstown to Oisterwijk | 3,886.48 mi (6,254.68 km) |
| Johnstown to Oldebroek | 3,889.13 mi (6,258.95 km) |
| Johnstown to Oldenzaal | 3,932.61 mi (6,328.92 km) |
| Johnstown to Ommen | 3,907.06 mi (6,287.80 km) |
| Johnstown to Oosterend | 3,879.94 mi (6,244.15 km) |
| Johnstown to Oosterhout | 3,871.35 mi (6,230.34 km) |
| Johnstown to Oosterwolde | 3,888.86 mi (6,258.51 km) |
| Johnstown to Oostzaan | 3,850.42 mi (6,196.65 km) |
| Johnstown to Opmeer | 3,845.66 mi (6,188.99 km) |
| Johnstown to Oss | 3,893.65 mi (6,266.22 km) |
| Johnstown to Oud-Beijerland | 3,848.62 mi (6,193.76 km) |
| Johnstown to Oudenbosch | 3,859.80 mi (6,211.74 km) |
