Tire for running on uneven ground

The traction performance on the uneven ground is improved. The present invention is a tire (1) for running on rough terrain having a tread portion (2). The tread portion (2) is provided with crown pattern blocks (5). The crown block (5) comprises: a crown block body (10) formed in a convex V shape toward the rear landing side in the tire rotation direction (N); and a crown fin section (11) protruding from the crown block body (10) toward the rear landing side in the tire rotation direction (N). The number of the crown fin parts (11) is only two. 本发明提高在不平整地面的牵引性能。本发明是具有胎面部(2)的不平整地面行驶用轮胎(1)。在胎面部(2)设置有胎冠花纹块(5)。胎冠花纹块(5)包括：胎冠花纹块主体(10)，其形成为朝向轮胎旋转方向(N)的后着地侧而成为凸状的V字状；以及胎冠翅片部(11)，其从胎冠花纹块主体(10)向轮胎旋转方向(N)的后着地侧突出。胎冠翅片部(11)仅为2个。