A leaning-vehicle-data-output apparatus comprising: a physical-quantity-data acquirer configured to acquire physical quantity data concerning a behavior of a leaning vehicle when the leaning vehicle turns left on a corner while leaning leftward or turns right on the corner while leaning rightward, the leaning vehicle including a vehicle body and an operation input device, the vehicle body being configured to lean leftward while turning to the left and lean rightward while turning to the right, the operation input device being configured to be operated by a rider; a vehicle-traveling-state-data generator configured to generate vehicle-traveling-state data based on the acquired physical quantity data; and a vehicle-traveling-state-data-output controller configured to output the vehicle-traveling-state data, characterized in that a single corner which comprises a deceleration portion, an entry portion, in which the leaning vehicle performs an operation of entering the corner, a turning portion, a rising portion, in which the leaning vehicle performs an operation of rising after turning, and an acceleration portion, and on which the leaning vehicle turns while leaning to perform yaw motion continuously in an identical direction, is divided into a plurality of sections including a section including the deceleration portion in which the leaning vehicle decelerates at a timing earlier than the entry portion, the vehicle-traveling-state-data generator is configured to generate vehicle-traveling-state data of the leaning vehicle in each of the plurality of sections of the single corner based on the acquired physical quantity data, the physical quantity data being acquired by the physical-quantity-data acquirer and concerning the behavior of the leaning vehicle while the leaning vehicle turns left on the corner while leaning leftward or turns right on the corner while leaning rightward, the plurality of sections including the section including the deceleration portion, and the vehicle-traveling-state-data-output controller is configured to output the vehicle-traveling-state data in each of the sections. a physical-quantity-data acquirer configured to acquire physical quantity data concerning a behavior of a leaning vehicle when the leaning vehicle turns left on a corner while leaning leftward or turns right on the corner while leaning rightward, the leaning vehicle including a vehicle body and an operation input device, the vehicle body being configured to lean leftward while turning to the left and lean rightward while turning to the right, the operation input device being configured to be operated by a rider; a vehicle-traveling-state-data generator configured to generate vehicle-traveling-state data based on the acquired physical quantity data; and a vehicle-traveling-state-data-output controller configured to output the vehicle-traveling-state data, characterized in that a single corner which comprises a deceleration portion, an entry portion, in which the leaning vehicle performs an operation of entering the corner, a turning portion, a rising portion, in which the leaning vehicle performs an operation of rising after turning, and an acceleration portion, and on which the leaning vehicle turns while leaning to perform yaw motion continuously in an identical direction, is divided into a plurality of sections including a section including the deceleration portion in which the leaning vehicle decelerates at a timing earlier than the entry portion, the vehicle-traveling-state-data generator is configured to generate vehicle-traveling-state data of the leaning vehicle in each of the plurality of sections of the single corner based on the acquired physical quantity data, the physical quantity data being acquired by the physical-quantity-data acquirer and concerning the behavior of the leaning vehicle while the leaning vehicle turns left on the corner while leaning leftward or turns right on the corner while leaning rightward, the plurality of sections including the section including the deceleration portion, and the vehicle-traveling-state-data-output controller is configured to output the vehicle-traveling-state data in each of the sections.