TOC has loads of loop options.
Woodhall Spa 1,2,3,4,5,18
Royal Lytham 1,2,3,14,15,16,17,18 (and only one par 3, the 1st)
Muirfield 10,8,9 or 1,2,16,17,18
R Troon 1,2,3,4,5, 6th tee to 14th green, 15,16,17,18
Nairn 1,2,3,16,17,18
N Berwick 1,2,3,15,16,17,18
Hunstanton 1,2,3,4,15,16,17,18
Brancaster 1,2,3,4,15,16,17,18
Alwoodley 1,2,3,15,16,17,18
Porthcawl 1,2,3,4,16,17,18
Burnham and Berrow 1,2,3,4,15,16,17,18
West Sussex 1,2,3,4,5,6,7,17,18
Sunningdale Old 1,2,3,4,13,14,15,16,17,18
Harlech 14,15,16,17,18
Ganton 1,2,3,14,15,16,17,18
The Belfry 10,17,18
Conwy 1,2,3,10
Wallasey 1,2,3,4,17,18 or 10,11,16,17,18
Delamere Forest 1,2,3,4,5,16,17,18
Prestbury 1,2,13,14,15,16,17,18