Rail lines are the length of railway route available for train service, irrespective of the number of parallel tracks.
| 2000 | 2005 | 2013 | 2014 | 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Argentina | 3,150.0 | 18,097.0 | 18,097.0 | 17,609.0 | 17,609.0 | 17,866.0 | 17,866.0 | ||||
| Chile | 2,035.0 | 2,120.0 | 2,057.0 | 2,396.0 | 2,396.0 | 2,396.0 | 2,396.0 | ||||
| Ecuador | 956.0 | ||||||||||
| Paraguay | 441.0 | ||||||||||
| Uruguay | 2,993.0 | 2,993.0 | 1,498.0 | 1,498.0 | 1,498.0 | 1,498.0 | 1,498.0 | 1,498.0 | 1,498.0 | 1,498.0 | |
| Venezuela (Bolivarian Republic of) | 336.0 | 336.0 |