TIRE FOR MOTORCYCLE FOR RUNNING ON ROUGH TERRAIN

A tire 1 for a motorcycle for running on rough terrain includes a tread portion 2. The tread portion 2 includes a base surface 8 and a plurality of blocks 10 raised outward in a tire radial direction from the base surface 8. At least one of the plurality of blocks 10 includes a finned block 15. The finned block 15 includes a block main body 16 and at least two fin portions 17 having a smaller width in a tire axial direction than the block main body 16 and extending to one side in a tire circumferential direction. A recess 18 is provided between the two fin portions 17 so as to be recessed from the base surface 8. A length L5 in the tire circumferential direction of the recess 18 is larger than a length L4 in the tire axial direction of the recess 18.