EuroVelo 1 in Wales runs from Harbour Village to Mathern in five stages covering a total of 372 km and 2715 m of climbing. The route stays entirely within Great Britain.
The section begins with a long 81.8 km ride from Harbour Village to Pembroke Dock, featuring four climbs—the longest is 3.4 km with a 101 m gain. The terrain involves moderate elevations, with the highest point at 122 m. There are 32 water or food stops along this stage.
Stage two from Pembroke Dock to Carmarthen covers 76.7 km with 869 m climbing. This is the hilliest day, including several climbs up to 2.8 km long and up to 128 m gained, with a peak height of 177 m. Riders will pass many places, and there are 38 stops for water or food.
The third stage from Carmarthen to Swansea is shorter at 63.9 km and less hilly with 272 m climbs. There is one climb of 3.4 km gaining 108 m. The highest point reaches 128 m, with 38 water or food stops.
From Swansea to Caerphilly, stage four extends 85 km with 520 m of climbing, including three climbs, the longest 3.3 km gaining 86 m and highest elevation at 211 m. Water or food stops remain plentiful at 38.
The final stage from Caerphilly to Mathern is 64.9 km with 259 m climbing and two climbs under 2.5 km, the highest elevation 98 m. There are 39 water or food stops. No temperature or best month data is given.
