The A53 to Shrewsbury is a nice bike road
and then you need to get across to the A5 (either Shrews by pass or else through the lanes - Bomere Heath, Baschurch, Ruyton XI Towns, to the A5 at Shottaton) and then onto the road through the Tanat Valley and over the Berwyns to Bala. Stop for a brew, then off up towards Llangollen, take a left (I forget the road name) it's signed for Chester, then right at the roundabout - brings you out at the Pondy. The back to Llangollen and stay on the road (don't turn tright into Llangollen town centre), brings you out at Ruabon, take the road for Overton on Dee, and then back through Ellesmere into Shrewsbury and back up the A53. Nice round trip, that.