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 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Albania | 440 | 423 | ||||||||||||
| Bosnia and Herzegovina | 943 | 1,000 | 1,027 | 1,027 | 1,027 | 1,027 | 1,027 | 1,027 | 1,018 | 417 | 1,018 | 1,018 | ||
| Bulgaria | 4,320 | 4,154 | 4,097 | 4,072 | 4,070 | 4,032 | 4,023 | 4,019 | 4,029 | 4,030 | 4,030 | 4,030 | 4,029 | 4,031 |
| Croatia | 2,726 | 2,726 | 2,722 | 2,722 | 2,723 | 2,722 | 2,604 | 2,604 | 2,605 | 2,605 | 2,605 | 2,617 | 2,617 | 2,617 |
| Czech Republic | 9,365 | 9,513 | 9,469 | 9,470 | 9,468 | 9,459 | 9,458 | 9,467 | 9,463 | 9,408 | 9,406 | 9,396 | 9,377 | 9,357 |
| Hungary | 8,005 | 7,950 | 7,903 | 7,878 | 7,895 | 7,895 | 7,895 | 7,896 | 7,749 | 7,752 | 7,588 | 7,588 | 7,588 | 8,037 |
| North Macedonia | 699 | 699 | 699 | 699 | 699 | 699 | 699 | 683 | 683 | 683 | 683 | 683 | 683 | 683 |
| Republic of Moldova | 1,139 | 1,075 | 1,157 | 1,157 | 1,157 | 1,157 | 1,156 | 1,151 | 1,151 | 1,151 | 1,151 | 1,151 | 1,151 | 1,149 |
| Montenegro | 248 | 249 | 239 | 239 | 249 | 249 | 249 | 249 | 249 | 249 | 250 | |||
| Poland | 22,560 | 19,599 | 19,702 | 19,725 | 19,617 | 18,959 | 18,942 | 18,510 | 18,429 | 18,513 | 18,536 | 18,538 | 18,611 | 18,620 |
| Romania | 11,364 | 10,781 | 10,777 | 10,777 | 10,777 | 10,768 | 10,770 | 10,770 | 10,766 | 10,766 | 10,765 | 10,759 | 10,769 | 10,769 |
| Serbia | 3,809 | 3,809 | 3,809 | 3,809 | 3,809 | 3,809 | 3,809 | 3,809 | 3,736 | 3,736 | 3,724 | 3,724 | 3,333 | 3,348 |
| Slovakia | 3,662 | 3,626 | 3,622 | 3,624 | 3,631 | 3,631 | 3,627 | 3,626 | 3,626 | 3,626 | 3,627 | 3,629 | 3,627 | 3,626 |
| Slovenia | 1,201 | 1,228 | 1,228 | 1,209 | 1,209 | 1,209 | 1,209 | 1,209 | 1,209 | 1,209 | 1,209 | 1,209 | 1,209 | 1,209 |