Region: Snowdonia, North Wales Difficulty: Difficult (Requires advanced skills and fittness) Distance: 26 miles Map: OS Landranger 115 Route Text Download: The Marin – Cowlyd Killer GPS Download: GPX and KML (available via the full MapMyRide page for this route, on the right hand side of the page) ViewRanger The Marin – Cowlyd Killer Back … Continue reading The Marin Cowlyd Killer