A shoe sole of an athletic shoe suitable for efficient running, wherein: the shoe sole has a front foot portion, a middle foot portion and a rear foot portion continuous with one another in a front-rear direction of a foot, and has a medial side, a lateral side and a central portion between the medial side and the lateral side continuous with one another in a width direction of the foot, the shoe sole comprising: a midsole having an upper surface and a lower surface and absorbing an impact of landing; and an outsole placed below the midsole; the midsole includes a midsole body formed by a foamed resin in the front foot portion; the outsole is provided in the front foot portion and the rear foot portion; the middle foot portion supports an arch of the foot, and a reinforcement member is provided in the middle foot portion for suppressing lowering of the arch; the rear foot portion has a depression extending forward from a calcaneal bone and being ungrounded; the middle foot portion has a band-like area extending in the front-rear direction in the central portion so as to be continuous with the depression; the reinforcement member and the midsole are provided in the middle foot portion so that the upper surface of the midsole less easily sinks downward due to a load from above on the medial side than in the band-like area and on the lateral side; in the front foot portion, the midsole body and the outsole have a longitudinal groove extending in the front-rear direction in the central portion so as to be continuous with the band-like area; a depth of the longitudinal groove is 5 mm to 20 mm; the longitudinal groove is provided to extend from a rear end of the front foot portion to a proximal interphalangeal joint of a second toe; the longitudinal groove is curved so as to be generally parallel to a lateral edge of the front foot portion of the midsole; a width and the depth of the longitudinal groove are smaller than those of the depression; and the depression, the band-like area and the longitudinal groove are smoothly continuous with one another in the front-rear direction. the shoe sole has a front foot portion, a middle foot portion and a rear foot portion continuous with one another in a front-rear direction of a foot, and has a medial side, a lateral side and a central portion between the medial side and the lateral side continuous with one another in a width direction of the foot, the shoe sole comprising: a midsole having an upper surface and a lower surface and absorbing an impact of landing; and an outsole placed below the midsole; a midsole having an upper surface and a lower surface and absorbing an impact of landing; and an outsole placed below the midsole; the midsole includes a midsole body formed by a foamed resin in the front foot portion; the outsole is provided in the front foot portion and the rear foot portion; the middle foot portion supports an arch of the foot, and a reinforcement member is provided in the middle foot portion for suppressing lowering of the arch; the rear foot portion has a depression extending forward from a calcaneal bone and being ungrounded; the middle foot portion has a band-like area extending in the front-rear direction in the central portion so as to be continuous with the depression; the reinforcement member and the midsole are provided in the middle foot portion so that the upper surface of the midsole less easily sinks downward due to a load from above on the medial side than in the band-like area and on the lateral side; in the front foot portion, the midsole body and the outsole have a longitudinal groove extending in the front-rear direction in the central portion so as to be continuous with the band-like area; a depth of the longitudinal groove is 5 mm to 20 mm; the longitudinal groove is provided to extend from a rear end of the front foot portion to a proximal interphalangeal joint of a second toe; the longitudinal groove is curved so as to be generally parallel to a lateral edge of the front foot portion of the midsole; a width and the depth of the longitudinal groove are smaller than those of the depression; and the depression, the band-like area and the longitudinal groove are smoothly continuous with one another in the front-rear direction.