Leave CC for Broadway - then take B4632 to Toddington - where you might want to take a peep at the steam railway station. ( A detour into Stanton & Stanway is also worthwhile). Anyway, from Toddington - take B4077 going W to Tewkesbury - where you might like to park & walk down to the mill by the river. After Tewkesbury - take A48 northbound for a couple of miles to join the M50 going west towards Wales (Ross-on-Wye).
When the M50 ends - follow A40 westbound heading towards Monmouth. After about 3 miles - look out for this turret on left >
https://www.google.co.uk/maps/@51.8815417,-2.6316834,3a,75y,155.24h,100.8t/data=!3m6!1e1!3m4!1srOQpKi1dNrmAOoLXv6s-fw!2e0!7i16384!8i8192!5m1!1e1
Now, SLOW DOWN - even though you are on a fast road & indicate a left turn. Forward the view and you will see a VERY SHARP turn to the left which can only be done at around 12 mph. (The sign says Goodrich).
Now look at this map:>https://www.google.co.uk/maps/@51.8564712,-2.6260397,6213m/data=!3m1!1e3!5m1!1e1
The nasty junction off the A40 is near the top. So, you now drive through the village of Goodrich & take the left turn where you see the signpost for YAT ROCK. Can you see ‘Area of Outstanding Natural Beauty’ marked on map? You drive to that location and climb a *steep and very narrow hill & turn R at top into the car park at YAT ROCK. Then walk to viewpoint high above the Wye Valley.
* This is the hill:> >https://www.google.co.uk/maps/@51.8482129,-2.6412925,3a,75y,192.59h,82.58t/data=!3m6!1e1!3m4!1ssBUTMxwyeMFYeiEoHux9AA!2e0!7i13312!8i6656!5m1!1e1
If you don’t want to do it - stay on A40 all the way to Monmouth & turn left at traffic lights for A466 & the lower Wye Valley.
Anyway, leave car park at Yat Rock on go south on B4432 until junction with A4136 where you turn R & head towards Monmouth to join A466 and proceed down the Wye valley to TINTERN to see the ruined abbey built in the 1100’s. Having seen Tintern Abbey - retrace your route N up the A466 back to the traffic lights at Monmouth - turn L and follow A40 to RAGLAN. Raglan has a ruined castle but you must go to the roundabout on the A40 and loop back to enter the driveway. The road configuration can be confusing - especially as you will wish to drive west on the A40 towards Abergavenny - assuming you see the castle. Look at this close view and you will see the road configuration at Raglan:> https://www.google.co.uk/maps/@51.7678516,-2.8442518,16.41z/data=!5m1!1e1
So, you are coming down the A40 and loop off what becomes the A449 & go to the roundabout and then left up the narrow road to the castle. On leaving the castle - you must turn L and then where you see the small triangle - loop around to re-gain the westbound A40 heading to Abergavenny.
From here on, it is straight forward to follow the A40 to Abergavenny and then Crickhowell & Brecon. (Beware of the double roundabout just south of Abergavenny).