A shoe sole comprising: an upper surface part configured to enable an upper member to be provided thereover; a bottom surface part configured to be in contact with the ground; and a side wall part configured to connect an outer peripheral end of the upper surface part and an outer peripheral end of the bottom surface part in a thickness direction of the shoe sole, wherein ventilation grooves recessed in the thickness direction of the shoe sole from an upper side are formed in the upper surface part, the shoe sole has a forefoot portion that has at least one air intake port (411, 421, 413) formed in the side wall part to be in communication with the ventilation grooves and draw air from outside into the ventilation grooves, the shoe sole has a midfoot portion that has at least one air outlet port (412, 422) formed in the side wall part to be in communication with the at least one air intake port (411, 421, 413) through the ventilation grooves and discharge air in the ventilation grooves to the outside, at least a part of the ventilation grooves constitutes an air intake groove extending rearward from the at least one air intake port (411, 421, 413), a forward-most one of the at least one air intake port (411, 421, 413) in a length direction of the shoe sole is located on a toe-side end of the side wall part, or on a lateral side wall on a lateral side in the side wall part, and a total opening area of the at least one air outlet port (412, 422) in the midfoot portion is larger than a total opening area of the at least one air intake port (411, 421, 413) in the forefoot portion, wherein the at least one air outlet port (412, 422) comprises at least one medial side air outlet port formed in the medial side wall and at least one lateral side air outlet port formed in the lateral side wall, and a total opening area of the at least one medial side outlet port is larger than a total opening area of the at least one lateral side air outlet port. ventilation grooves recessed in the thickness direction of the shoe sole from an upper side are formed in the upper surface part, the shoe sole has a forefoot portion that has at least one air intake port (411, 421, 413) formed in the side wall part to be in communication with the ventilation grooves and draw air from outside into the ventilation grooves, the shoe sole has a midfoot portion that has at least one air outlet port (412, 422) formed in the side wall part to be in communication with the at least one air intake port (411, 421, 413) through the ventilation grooves and discharge air in the ventilation grooves to the outside, at least a part of the ventilation grooves constitutes an air intake groove extending rearward from the at least one air intake port (411, 421, 413), a forward-most one of the at least one air intake port (411, 421, 413) in a length direction of the shoe sole is located on a toe-side end of the side wall part, or on a lateral side wall on a lateral side in the side wall part, and a total opening area of the at least one air outlet port (412, 422) in the midfoot portion is larger than a total opening area of the at least one air intake port (411, 421, 413) in the forefoot portion, wherein the at least one air outlet port (412, 422) comprises at least one medial side air outlet port formed in the medial side wall and at least one lateral side air outlet port formed in the lateral side wall, and a total opening area of the at least one medial side outlet port is larger than a total opening area of the at least one lateral side air outlet port.