Calvin Trevena and Ann Varran, both 51, were found between Chiverton Cross and St Agnes in Cornwall on the 2 August.
Police found a damaged white S4 Audi estate on the B3277 and the bodies of the two walkers nearby.
Ryan Morrish, 27, from Redruth, has been charged with two counts of causing death by dangerous driving and one of perverting the course of justice.
He is due to appear at Truro Magistrates' Court on 28 March.
A man has been charged with causing the deaths of two walkers by dangerous driving.