A standing ride on mower includes a frame, a right drive wheel, a left drive wheel, a prime mover, a right side integrated transaxle operating under influence of the prime mover to drive rotation of the right drive wheel and having a housing, hydraulic pump, and hydraulic motor, a left side integrated transaxle operating under influence of the prime mover to drive rotation of the left drive wheel, having a housing, hydraulic pump, and hydraulic motor, and an operator platform to support a standing operator of the mower extending beneath the left housing and beneath the right housing such that a distance between an innermost portion of the right side integrated transaxle and an innermost portion of the left side integrated transaxle is less than a width of the operator platform.