|Distance:||40 km (24.9 miles)|
|Met:||T42, T43, T7|
|Now part of:||R759, R763|
This route crossed the northern edge of the Wicklow Mountains, using what is now the R759 as far as Sraghmore. Here it abruptly turned south to meet the T43 (now R755) further south than the R759 does. After multiplexing with the T43 to Annamoe, the route once again headed east. The 1950s map shows a road with a different curvature which crosses the Vartry River further west than the modern R763 does, but that road is not marked in modern Atlases at all, nor indeed is it obvious on Google Earth, so it may be a simple error.
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