The B52 road connects the A4 road (Northern Ireland) in the village of Belcoo in County Fermanagh above the village green overlooking the shores of Lough MacNean. The road crosses the dismantled Sligo, Leitrim and Northern Counties Railway with the former station and closed level crossing. On leaving Belcoo the road heads westwards to Holywell with the shore of Lough MacNean on the left over the fields. The road continues to Garrison, County Fermanagh, connecting with the B53 (which leads to Manorhamilton, over the border in County Leitrim) and onwards to Drumlisaleen and connecting at Corry Cross Roads with the A46 road (Northern Ireland) in Belleek, County Fermanagh on the border of County Donegal and County Fermanagh. Corry Cross Roads which is in Belleek is the most westerly numbered road junction in the UK.
Coordinates: 54°41′48″N 8°09′12″W / 54.69667°N 8.15333°W