Bradley Wiggins: Caerphilly Mountain is biggest threat to Tour of Britain lead

Bradley Wiggins, Tour of Britain 2013, stage four

Bradley Wiggins believes tomorrow's Tour of Britain stage into Caerphilly will pose the biggest threat to his race lead.

Wiggins retained the IG gold jersey in this afternoon's stage to Llanberis but admitted that Thursday's now traditional leg into Caerphilly - which includes two ascents of the town's iconic mountain - is where the overall winner will be crowned.

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