| South Houston to Nowy Dwor Mazowiecki | 5,580.41 mi (8,980.79 km) |
| South Houston to Nowy Sacz | 5,698.77 mi (9,171.28 km) |
| South Houston to Nowy Targ | 5,681.29 mi (9,143.16 km) |
| South Houston to Nowy Tomysl | 5,428.75 mi (8,736.73 km) |
| South Houston to Nysa | 5,544.17 mi (8,922.48 km) |
| South Houston to Oborniki | 5,439.36 mi (8,753.81 km) |
| South Houston to Oborniki Slaskie | 5,495.79 mi (8,844.61 km) |
| South Houston to Olawa | 5,524.46 mi (8,890.75 km) |
| South Houston to Olecko | 5,569.96 mi (8,963.99 km) |
| South Houston to Olesnica | 5,516.73 mi (8,878.32 km) |
| South Houston to Olesno | 5,566.28 mi (8,958.06 km) |
| South Houston to Olkusz | 5,631.18 mi (9,062.51 km) |
| South Houston to Olsztyn | 5,516.06 mi (8,877.24 km) |
| South Houston to Opalenica | 5,438.86 mi (8,753.00 km) |
| South Houston to Opoczno | 5,610.38 mi (9,029.03 km) |
