The ever popular Welsh Castles Relay, is a 2 day, 20 stage, 211 mile, staggered relay race (mostly on road, but with many hills, mountains and bumpy bits on route - this being Wales and all...).
The 34th edition will be held over the weekend of the 4th and 5th of June 2016. 64 teams will take part this year.
The route goes from Caernarfon to Cardiff with an overnight stay in Newtown. It is organised by Les Croupiers Running Club Cardiff, but is supported (and made possible) by the marshalling and other efforts of all those clubs who take part.