| Callaway to Nuth | 4,692.42 mi (7,551.72 km) |
| Callaway to Oegstgeest | 4,604.92 mi (7,410.91 km) |
| Callaway to Oirschot | 4,654.52 mi (7,490.72 km) |
| Callaway to Oisterwijk | 4,648.48 mi (7,481.01 km) |
| Callaway to Oldebroek | 4,655.47 mi (7,492.25 km) |
| Callaway to Oldenzaal | 4,699.47 mi (7,563.06 km) |
| Callaway to Ommen | 4,674.18 mi (7,522.37 km) |
| Callaway to Oosterend | 4,648.62 mi (7,481.24 km) |
| Callaway to Oosterhout | 4,633.24 mi (7,456.48 km) |
| Callaway to Oosterwolde | 4,657.71 mi (7,495.86 km) |
| Callaway to Oostzaan | 4,615.67 mi (7,428.20 km) |
| Callaway to Opmeer | 4,612.07 mi (7,422.41 km) |
| Callaway to Oss | 4,656.78 mi (7,494.36 km) |
| Callaway to Oud-Beijerland | 4,610.77 mi (7,420.32 km) |
| Callaway to Oudenbosch | 4,621.09 mi (7,436.93 km) |
