A running analysis device includes a processor and a memory storing a program. By executing the program, the processor performs obtainment, setting, and estimation processes. By the obtainment process, first data on an acceleration in an up direction perpendicular to a moving direction of a subject and second data on an acceleration in a direction opposite to the moving direction are obtained from a motion sensor attached to the subject's head or neck and including an acceleration sensor, the first and second data being detected by the acceleration sensor while the subject is running. By the setting process, a candidate time range including a candidate timing for a ground-contacting timing when a foot of the subject contacts the ground is set based on the first data. By the estimation process, the ground-contacting timing is estimated in the candidate time range, based on a timing when the second data is minimum.
