Merchiston Castle School is situated in Colinton on the south-west side of Edinburgh.

By road:
From the north: After crossing the Forth Road Bridge, follow signs to M8 and Glasgow. Take slip road marked Edinburgh and City Bypass (A720). Follow Bypass southbound sign. Exit at Dreghorn Junction (Colinton exit). Follow signs for Redford Barracks, Merchiston is opposite these, on the north side of Colinton Road.

From the south: A1, A7 and A68 all lead to the City Bypass. Follow signs for the Forth Road Bridge and airport. Leave Bypass at Dreghorn Junction (Colinton exit). Follow signs for Reford Barracks, Merchiston is opposite these, on the north side of Colinton Road.

From the west: From the M8, do not follow route to Forth Road Bridge, but continue on to the City Bypass, following southbound signs. Exit at Dreghorn Junction (Colinton exit). Follow signs for Redford Barracks, Merchiston is opposite these, on the north side of Colinton Road.

By rail:
Take a taxi from Waverley Station, travel time approx 20 mins.

By air:
Take a taxi from Edinburgh Airport, travel time approx 15 mins.