This study attempts to help resolve our lack of knowledge concerning the effects of velocity and load-carrying on footprints and gait. Several archaeological sites worldwide have preserved footprints, and in the case of some sites, such as the Laetoli footprint trails in Kenya, proper analysis of the footprints could yield crucial information about hominids. We will examine how gait and footprints change, if at all, with changes in speed and carried weight. Twelve individuals, six male and six female undergraduate students, moved across 9.2 meters of tiled surface with and without an additional load on their back equal to 20% of their body weight, and at three different speeds – self-selected walking, jogging, and running velocities. As they walked this distance, they stepped across an RSscan mat that dynamically records pressure, generating a digital image of their footprint, while also being filmed in order to record gait. While foot, midfoot, and heel contact length and the contact width of the ball of the foot all varied without any clear pattern over the 216 tests, for almost all volunteers the width of midfoot contact increased significantly with speed. There was a significant increase in midfoot contact width from walking to a higher speed, and also overall from jogging to running. Carrying loads equal to or less than 20% of one’s bodymass has no significant affect upon midfooth width or other footprint dimensions. The average angle between the heel and trochanterion (the tip of the greater trochanter, a feature of the femur) changed significantly with movement speed for most volunteers, but not in response to carried loads of equal to or less than 20% of one's bodymass.