The A6187 is a secondary route in the Peak District, Derbyshire and South Yorkshire, England.

It starts in Castleton, runs in an easterly direction past Fox House Inn where it joins the A625 road.

At Fox House a separate branch, also designated the A6187 turns off towards Froggatt Edge where it joins the South-most end of Stony Ridge Road.

Beyond Fox House the route leading to Hathersage is joined by the B6521 road to Grindleford via Padley Gorge.

The road continues towards Hathersage passing between Owler Tor and Over Owler Tor and then takes a tight curve at Surprise View where the traveller will be greeted with a view of Hope Valley.