A rubber composition for a tread optimizing a vulcanization speed in a vulcanization step and, further, improving heat aging resistance is provided.A rubber composition for a tread comprising 20 to 90 parts by weight of silica,0.5 to 2 parts by weight of (A) a guanidine vulcanization accelerator,0.1 to 0.5 part by weight of (B) a thiuram vulcanization accelerator,and 0.5 to 2 parts by weight of (C) a sulfenamide vulcanization accelerator represented by the general formula (1): ##STR00001## (wherein R is a linear alkyl group or a branched alkyl group having 1 to 18 carbons), based on 100 parts by weight of a rubber component.