Some useful information
The official guide

OFFA'S DYKE
FROM	TO	DATE	MILES	PICTURES
Sedbury	Tintern	28/3/2013	7.5	The first few.(from Arthur
Tintern	Monmouth	29/3/2013	11	Ann's ones
Monmouth	Llangattock	30/3/2013	14
Llangattock	Capel Y Ffin	31/3/2013	12
Capel Y Ffin	Hay on Wye	1/4/2013	9
Hay on Wye	Kington	11/10/2013	14.25	Ann's ones
Kington	Knighton	12/10/2013	14.25
Knighton	Newcastle on Clun	13/10/2013	8.25
Newcastle on Clun	Montgomery	14/10/2013	13
Montgomery	Welshpool	15/10/2013	8.5
Welshpool	Four crosses	19/10/2017	9.5	Ann's ones
Four Crosses	Trefonen	20/10/2017	8
Trefonen	Pentre	21/10/2017	Public transport due to Storm Brian.
Trefonen	Chirk	11/04/2019	13.4	from Arthur, Ann & Jonathan
Chirk	Pen-y-stryt	12/04/2019	11.8	from Ann & Jonathan
Pen-y-stryt	Bwlch Penbarras	13/04/2019	9.1	from Ann & Jonathan
Bwlch Penbarras	Bodfari	14/04/2019	11.1	from Ann & Jonathan
Bodfari	Prestatyn	15/04/2019	13.3	from Ann & Jonathan
Prestatyn	Home	16/04/2019	Train