| West Whittier-Los Nietos to Nuth | 5,655.15 mi (9,101.09 km) |
| West Whittier-Los Nietos to Oegstgeest | 5,550.11 mi (8,932.03 km) |
| West Whittier-Los Nietos to Oirschot | 5,608.67 mi (9,026.27 km) |
| West Whittier-Los Nietos to Oisterwijk | 5,601.55 mi (9,014.82 km) |
| West Whittier-Los Nietos to Oldebroek | 5,579.56 mi (8,979.44 km) |
| West Whittier-Los Nietos to Oldenzaal | 5,616.37 mi (9,038.67 km) |
| West Whittier-Los Nietos to Ommen | 5,591.35 mi (8,998.40 km) |
| West Whittier-Los Nietos to Oosterend | 5,556.96 mi (8,943.07 km) |
| West Whittier-Los Nietos to Oosterhout | 5,588.26 mi (8,993.43 km) |
| West Whittier-Los Nietos to Oosterwolde | 5,564.13 mi (8,954.60 km) |
| West Whittier-Los Nietos to Oostzaan | 5,550.35 mi (8,932.43 km) |
| West Whittier-Los Nietos to Opmeer | 5,539.27 mi (8,914.60 km) |
| West Whittier-Los Nietos to Oss | 5,602.01 mi (9,015.57 km) |
| West Whittier-Los Nietos to Oud-Beijerland | 5,565.95 mi (8,957.53 km) |
| West Whittier-Los Nietos to Oudenbosch | 5,580.80 mi (8,981.43 km) |
