Here:

https://twitter.com/RCTCouncil/status/869177036039913472

You are probably wondering WTF is the  Rhigos Moutain Road?  Well it is between the SWCC HUT and Cardiff on the A 4061

First avoid Cardiff on Saturday 3rd June because of the Footie.  Best route is via Aberdare.

What is the quickest route to the SWCC from Cardiff? I always just go up the A470/A465 and avoid the signposted route through Aberdare which I seem to remember being slow... (I follow speed limits!)