| Enid to Nuth | 4,844.76 mi (7,796.88 km) |
| Enid to Oegstgeest | 4,745.98 mi (7,637.91 km) |
| Enid to Oirschot | 4,801.46 mi (7,727.20 km) |
| Enid to Oisterwijk | 4,794.71 mi (7,716.35 km) |
| Enid to Oldebroek | 4,786.82 mi (7,703.64 km) |
| Enid to Oldenzaal | 4,828.19 mi (7,770.22 km) |
| Enid to Ommen | 4,802.41 mi (7,728.74 km) |
| Enid to Oosterend | 4,771.66 mi (7,679.24 km) |
| Enid to Oosterhout | 4,780.12 mi (7,692.86 km) |
| Enid to Oosterwolde | 4,779.98 mi (7,692.63 km) |
| Enid to Oostzaan | 4,751.52 mi (7,646.84 km) |
| Enid to Opmeer | 4,743.95 mi (7,634.65 km) |
| Enid to Oss | 4,799.13 mi (7,723.46 km) |
| Enid to Oud-Beijerland | 4,757.18 mi (7,655.95 km) |
| Enid to Oudenbosch | 4,770.12 mi (7,676.77 km) |
