Uptake of L-lactate across the membrane (By similarity). Can also transport D-lactate and glycolate (By similarity). Seems to be driven by a proton motive force (By similarity). (S)-lactate(in) + H(+)(in) = (S)-lactate(out) + H(+)(out) (R)-lactate(in) + H(+)(in) = (R)-lactate(out) + H(+)(out) glycolate(in) + H(+)(in) = glycolate(out) + H(+)(out) Belongs to the lactate permease family.