Curvature is an important parameter for haptic perception of 3d shapes. It can be spatially defined by length to height ratios. Here, we aim to determine if mechanisms involved in the rather complex processing of curvature overlap with the processing of the basic somatosensory feature tactile distance. For that, we leverage tactile distance adaptation-aftereffects. Specifically, we investigate whether adaptation to tactile distance affects subsequent curvature perception. As test stimuli we used convex curved strips of constant lengths but differing heights, producing varying curvature values (0.25, 0.18, and 0.13 cm^-1), passively presented at participants’ palms. Each trial, participants were first adapted to either 1) a distance larger than the length of the subsequently applied curve’s length, 2) a smaller distance, 3) or punctual indentations as control for desensitization. Afterwards, a two-interval forced-choice discrimination task followed: Test stimuli were compared at the unadapted versus adapted palm and participants judged which one had a higher curvature. We expected that after adaptation to a larger distance, the curve indentation area might be perceived as smaller than it de facto is. With its’ base-to-peak-height staying constant, the gradient might then be perceived as steeper, i.e. the curvature as higher. Results confirmed that judged curvature indeed increased after adaptation to a large distance. Also, after adapting to a smaller distance, test stimuli were perceived as less curved. Single indentations barely affected subsequent perception. The existence of a cross-property aftereffect from distance to curvature highlights the importance of low-level spatial processing in tactile curvature perception.