Flattish but with great variation, this 22nd section of St Ninian’s Way starts at Troon old parish church . Go South along West Portland Street to the coast and pick up the Ayrshire Coastal Path (ACP) after 100 m. Proceed west to the point(2km) and then back East along the marina to Barrassie Sands (4 km) . Turn east off ACP onto marked track . Pass under two railway bridges (400m), then under A68 (1.3km). Rejoin ACP and proceed to bridge back over the A78 (2.5km). Follow ACP past the Gailes Marsh Nature Reserve (1km) towards Irvine and track junction (2km), veer right (North along track until it rejoins ACP(1 km) . Continue through Irvine past the Scottish Maritime Museum and underneath the railway(1km)) and across footbridge over the River Irvine (500 m). Then proceed north along ACP and cross the river Garnock (3 km) and through the tunnel under the A78 . Continue along ACP path beside the Garnock into Kilwinning and arrive at the ruins of the old abbey (2 km).
Also part of the Whithorn Way – http://www.whithornway.org . courtesy of the WWSG. where a detailed route description with grid references is available.