It's the only one I do. This was my 8th consecutive running. This is another race that's improved markedly over the years. Nice route, challenging, lovely views, friendliness, support, some off-road trail (road runners don't read that bit), rave reviews and max ratings on Runners World, and Y Pantri. What's not to like? I'll be back. Accommodation's already booked (thanks Stu!).
Entries for 2014 open in a few hours' time at midnight New Year's Day. Just saying.