(S/E) Exit Loudoun Hill car park via a wooden gate, signposted Spirit of Scotland.
Follow the path downhill past the Spirit of Scotland Monument. From the monument follow the path which goes downhill to a stile and a footbridge over the River Irvine.
Cross the stile and bridge then continue along the path as it leads you uphill and onto a flat area.
(1) Cross over a farm track and follow the remains of a dry stone wall as it heads uphill (North West) and around the base of Loudoun Hill.
It will lead you into some trees, then past a stone ruin.
(2) After passing the ruin, choose a point at which to start your climb to the top of the hill. There are no distinct paths unfortunately!
From the summit head West across the flat top, to pick up a steep path down the other side of Loudoun Hill, leading to a stone boundary wall.
(3) Follow the wall right (North East) along the base of the hill a short distance, looking out for a stile on your left-hand side which will allow you to safely cross the wall.
Cross the field North (if in crop stick to the field edge) towards a second stile on the fence opposite.
Follow the fence-line North to a third stile, emerging onto a minor road. Turn left (West) and follow the road downhill for 500m.
(4) At this point you will come to a gate on your left with a track heading South East across the field.
Follow this track as it heads around the base of Loudoun Hill and meets up with the flat grassy area you were at earlier, close to point (1)
Turn right to rejoin the path back to the Spirit of Scotland Monument and retrace your steps back to the Loudoun Hill car park (S/E)