| Yambol to Oegstgeest | 1,222.72 mi (1,967.77 km) |
| Yambol to Oirschot | 1,170.94 mi (1,884.45 km) |
| Yambol to Oisterwijk | 1,177.20 mi (1,894.52 km) |
| Yambol to Oldebroek | 1,176.41 mi (1,893.25 km) |
| Yambol to Oldenzaal | 1,133.68 mi (1,824.48 km) |
| Yambol to Ommen | 1,159.41 mi (1,865.90 km) |
| Yambol to Oosterend | 1,188.57 mi (1,912.82 km) |
| Yambol to Oosterhout | 1,192.34 mi (1,918.89 km) |
| Yambol to Oosterwolde | 1,179.98 mi (1,899.00 km) |
| Yambol to Oostzaan | 1,214.13 mi (1,953.96 km) |
| Yambol to Opmeer | 1,219.78 mi (1,963.05 km) |
| Yambol to Oss | 1,170.09 mi (1,883.07 km) |
| Yambol to Oud-Beijerland | 1,215.05 mi (1,955.43 km) |
| Yambol to Oudenbosch | 1,204.01 mi (1,937.66 km) |
| Yambol to Oudewater | 1,202.49 mi (1,935.22 km) |
