Rail lines are the length of railway route available for train service, irrespective of the number of parallel tracks.
| 2000 | 2005 | 2010 | 2011 | 2012 | 2013 | 2014 | 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Ecuador | 956.0 | |||||||||||||
| Venezuela (Bolivarian Republic of) | 336.0 | 336.0 | ||||||||||||
| Algeria | 3,973.0 | 3,572.0 | 3,664.0 | 4,226.0 | 4,175.0 | 3,799.9 | 3,799.9 | 3,843.2 | 4,016.3 | 4,016.3 | 4,020.3 | 4,000.5 | ||
| Iran | 6,042.0 | 7,131.0 | 8,216.5 | 8,367.5 | 8,368.0 | 8,592.5 | 8,559.5 | 8,559.5 | 8,576.0 | 9,021.0 | 9,327.0 | 9,454.0 | 9,453.8 | 9,455.0 |
| Iraq | 2,603.0 | 1,898.0 | 2,138.0 | 2,370.0 | ||||||||||
| 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 | ||||||||||
| Congo | 900.0 | 795.0 | 893.2 | |||||||||||
| Gabon | 731.0 | 810.0 | 810.0 | 810.0 | 810.0 | 810.0 | 810.0 | 810.0 | 810.0 | 810.0 | 810.0 | 648.0 | 648.0 | 648.0 |
| Nigeria | 3,557.0 | 3,528.0 | 3,528.0 | 3,528.0 | 3,528.0 | 3,528.0 | 3,528.0 | 3,528.0 |