The Blackstairs Mountains () run roughly north/south along the border between County Carlow and County Wexford in Ireland. The highest peak is Mount Leinster with a total height of . Blackstairs Mountain is the second highest peak at .
Highest Hills Height (m) Location Mount Leinster 793 Blackstairs Mountain 732 Black Rock Mountain 599 Knockroe 540 Slievebawn 520 Carrigroe 495 Carrigalachan 463 Croaghaun 455 Slievebaun 444
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