The Three Circles of Machen provides entrants with a range of options to enjoy the scenic beauty of South Wales' eastern valleys. Three different circular routes of 8, 10 and 12 miles offer a choice of seven different combinations ranging from 8 to 30 miles. The 8 mile (northern) loop uses part of the Rhymney Valley Ridgeway path en route to Mynydd Machen. The 10 mile (eastern) loop mainly follows the Rhymney River Circular path, while the 12 mile (western) loop visits Rudry Common, Graig Lysfaen and Ruperra Castle
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