Sean,
From a trip last fall:
Royal Portrush and Portrush Valley. Two very different courses, but both worthy in their own ways.
Portmarnock and The Island
A contrast in styles:
Broadmoor East and Four Mile Ranch
Doug
Is P'rush Valley better than Portstewart? The Portmarnock/Island pairing is good, but I am not terribly interested in seeing either course again.
UPDATE
Woking and Addington (solid pair)
Dornoch and Brora (solid pair)
Enniscrone and Carne (solid pair)
North Berwick and Dunbar (solid pair)
CPC and Pebble (solid pair)
Sandwich and Princes (solid pair)
Pacific Dunes and Old Mac (I will take a punt on unfinished course because it looks compelling)
Riviera and Rustic (solid pair)
Sand Hills and Wildhorse (solid pair)
Augusta and Longshadow (solid pair)
MPCC (which course?) and Pasa (solid pair)
Sligo and Donegal (could be replaced)
Sunny Old and Swinley (could be replaced)
Pennard and Southerndown (could be replaced)
Pulborough and Roayal Ashdown Forest (could be replaced)
Cabo del Sol and Dunes at Diamonte Cabo San Lucas (could be replaced)
Crystal Downs and Arcadia (could be replaced)
TOC and Elie (could be replaced)
Maybes
Ocean Course and Yeamans Hall (aren't these more than an hour apart?)
Bethpage and NGLA (to be honest I am not terribly interested in Bethpage, but I would kill to see NGLA)
Berkshire Red and Blue (not sure I get enough contrast in the day's play)
Beau Desert and Notts (not sure if these are within an hour)
Wilmington and Cape Fear (a bit out there, but I really liked the pix I have seen of each place)
Ganton and Alwoodley (are they within an hour?)
That is 18 pairs which represent a decent variety golf and courses I would like to see again and for the first time. ONe huge gap seems to be Oz. There has to be at least one Aussie pair out there.
Ciao