Uptake of glycolate across the membrane (PubMed:11283302, PubMed:11785976). Can also transport L-lactate and D-lactate (PubMed:11283302, PubMed:11785976). Seems to be driven by a proton motive force (PubMed:11785976). glycolate(in) + H(+)(in) = glycolate(out) + H(+)(out) (S)-lactate(in) + H(+)(in) = (S)-lactate(out) + H(+)(out) (R)-lactate(in) + H(+)(in) = (R)-lactate(out) + H(+)(out) Inhibited by the proton ionophore carbonyl cyanide m-chlorophenylhydrazone (CCCP). By glycolate. The glcA-lldP double mutant is unable to grow on glycolate and displays undetectable glycolate uptake when grown in the presence of glycolate. Belongs to the lactate permease family.