I went up there a couple of weeks ago for the 1st time. The plan was to do Red+Black runs. We started at Abergorlech carpark, not a lot around except for a portaloo, so maybe best to fill water before getting there. We spoke to a local who had a hose outside and he let us fill.
Its all signposted, so easy to follow, and easy to join onto the black just before the final red descent, so dont panick! However, the black run joins the blue for a short stretch and its very easy to continue on the blue to rejoin the black further on – missing out a large section of black. This is what we did, I can now see where we went wrong from a vid (I commented at the time)! http://www.youtube.com/watch?v=gI2ZcRi8jSw
Red and 1/2 black took us about 3 hrs max, and that was taking it nice and easy up the hills with my mate. I would think 4hrs for red+black at an easyish pace.
I thought there was a lot of fireroad climbs on the red, and a bit disappointed with the short descent sections, although the 1st and last were very good. The black was starting to look a bit better overall, but we didnt do it all. Both trails were very smooth when compared to Afan, so a lot less harsh on the bikes and bodies!
I need to go back to fully appreciate it 8)