Frome Valley Walkway
The Frome Valley Walkway is an 18-mile ( 29 km ) footpath which follows the River Frome from the River Avon in the centre of Bristol to the Cotswold Hills in South Gloucestershire . 
<triplet> Frome Valley Walkway <subj> 18 <obj> length <triplet> Bristol <subj> River Avon <obj> located in or next to body of water