The first half of the race is virtually flat, so that makes the second even more trying, as virtually all elevation gain is crammed inside 85 kilometres. The first ascent is the non-classified Blwch Mountain – 3.4 kilometres at 6.4% – before the riders further penetrate Bannau Brycheiniog National Park, which was until recently known by its English name Brecon Beacons.
The first KOM climbs of the day are Rhigos and Bryn Du, respectively 5.8 kilometres at 5.1% and 3.1 kilometres at 8.4%. Two more none-KOM climbs (2.8 kilometres at 6.8% and 600 metres at 10.2%) precede some 20 kilometres on the flat before the first passage on the line takes place with 15 kilometres to go.
The finishing circuit revolves around Caerphilly Mountain. The climb totals 1.7 kilometres and the average gradients sits at 8.3%, while most vertical meters are bridged in the last kilometre. This section goes up at 12%.
As said, the wall-like ascent is tackled twice before the Tour of Britain ends with a flying descent into Caerphilly.
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Another interesting read: results 8th stage + final GC 2023 Tour of Britain.
Tour of Britain 2023 – stage 8: route, profile, more
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