| Sinop to Nowy Dwor Mazowiecki | 984.20 mi (1,583.92 km) |
| Sinop to Nowy Sacz | 869.22 mi (1,398.88 km) |
| Sinop to Nowy Targ | 889.96 mi (1,432.25 km) |
| Sinop to Nowy Tomysl | 1,135.70 mi (1,827.73 km) |
| Sinop to Nysa | 1,027.86 mi (1,654.18 km) |
| Sinop to Oborniki | 1,123.71 mi (1,808.43 km) |
| Sinop to Oborniki Slaskie | 1,071.79 mi (1,724.88 km) |
| Sinop to Olawa | 1,044.36 mi (1,680.73 km) |
| Sinop to Olecko | 1,011.55 mi (1,627.93 km) |
| Sinop to Olesnica | 1,050.34 mi (1,690.35 km) |
| Sinop to Olesno | 1,000.27 mi (1,609.77 km) |
| Sinop to Olkusz | 935.90 mi (1,506.18 km) |
| Sinop to Olsztyn | 1,054.56 mi (1,697.15 km) |
| Sinop to Opalenica | 1,125.27 mi (1,810.95 km) |
| Sinop to Opoczno | 952.45 mi (1,532.82 km) |
