A sole structure for an article of footwear comprising: a sole plate (10, 210, 310) including a midfoot region and at least one of a forefoot region and a heel region; wherein the sole plate (10, 210, 310) has an undulating profile at a transverse cross-section of the sole plate (10, 210, 310), the undulating profile including multiple waves (W1, W2, W3, W4, W5, W6, W7, W8) each having a crest (C1, C2, C3, C4, C5, C6, C7, C8) and a trough (T1, T2, T3, T4, T5, T6, T7, T8), and the sole plate has ridges (R1, R2, R3, R4, R5, R6, R7, R8) corresponding with the crest and the trough of each wave and extending longitudinally throughout the midfoot region and the at least one of a forefoot region and a heel region, wherein: the multiple waves include at least two waves (W1, W2) disposed between a longitudinal midline and a medial extremity of the sole plate (10, 210, 310), and at least two waves (W6, W7) disposed between the longitudinal midline and a lateral extremity of the sole plate (10, 210, 310); and the at least two waves (W1, W2) disposed between the longitudinal midline and the medial extremity have a shorter average wavelength than the at least two waves (W6, W7) disposed between the longitudinal midline and the lateral extremity, and wherein the wavelengths increase in magnitude in order from the medial extremity to the lateral extremity. a sole plate (10, 210, 310) including a midfoot region and at least one of a forefoot region and a heel region; wherein the sole plate (10, 210, 310) has an undulating profile at a transverse cross-section of the sole plate (10, 210, 310), the undulating profile including multiple waves (W1, W2, W3, W4, W5, W6, W7, W8) each having a crest (C1, C2, C3, C4, C5, C6, C7, C8) and a trough (T1, T2, T3, T4, T5, T6, T7, T8), and the sole plate has ridges (R1, R2, R3, R4, R5, R6, R7, R8) corresponding with the crest and the trough of each wave and extending longitudinally throughout the midfoot region and the at least one of a forefoot region and a heel region, wherein: the multiple waves include at least two waves (W1, W2) disposed between a longitudinal midline and a medial extremity of the sole plate (10, 210, 310), and at least two waves (W6, W7) disposed between the longitudinal midline and a lateral extremity of the sole plate (10, 210, 310); and the at least two waves (W1, W2) disposed between the longitudinal midline and the medial extremity have a shorter average wavelength than the at least two waves (W6, W7) disposed between the longitudinal midline and the lateral extremity, and wherein the wavelengths increase in magnitude in order from the medial extremity to the lateral extremity. the multiple waves include at least two waves (W1, W2) disposed between a longitudinal midline and a medial extremity of the sole plate (10, 210, 310), and at least two waves (W6, W7) disposed between the longitudinal midline and a lateral extremity of the sole plate (10, 210, 310); and the at least two waves (W1, W2) disposed between the longitudinal midline and the medial extremity have a shorter average wavelength than the at least two waves (W6, W7) disposed between the longitudinal midline and the lateral extremity, and wherein the wavelengths increase in magnitude in order from the medial extremity to the lateral extremity.