Rail lines are the length of railway route available for train service, irrespective of the number of parallel tracks.
| 2000 | 2005 | 2010 | 2017 | 2018 | 2019 | 2020 | 2021 | |
|---|---|---|---|---|---|---|---|---|
| Saudi Arabia | 958.0 | 1,020.0 | 1,412.0 | 2,620.0 | 2,939.0 | |||
| United Arab Emirates | 279.0 | 261.0 | 261.0 | 279.0 |