I am looking for to the race as it will be fun to run around Cardiff again. I do run across the barrage most evenings during my training sessions and I never get tired of it. That is the best part of the marathon running across the barrage with the views over Cardiff bay.
Reading the route description we don't actually run through the tunnels, which I was quite looking forward to. Instead we leave the A4232 at the Techniquest junction just before the entrance to the tunnels, go around the roundabout, then back onto the A4232 to run back across the bridge
I've mapped out the route on Endomondo so you can study it further. I think it's about right even though the distance it measures is about 13.3 miles. It gives you a better idea of the roads you will be running on.
Happy running.
Edited: 01/07/2011 at 17:21