Provided is a motorcycle tire (1) for traveling on rough terrain, the tire having a block (10) provided to a tread section (2). The block (10) has the following: a block lateral surface body part (15) that extends straight from the edge of a tread surface (12) inward in the tire radial direction; and a skirt section (20) that connects the block lateral surface body part (15) and a groove bottom surface (9). The skirt section (20) has the following: a flat section (21) that extends in a straight line on the groove bottom surface (9) side; and a curved section (22) that connects, in a beveled arc, the area between the flat section (21) and the block lateral surface body part.