The paper "A dataset and review of empirical estimation relationships for landslide runout distances" by Gong et al. (2025), published in Earth-Science Reviews (doi: https://doi.org/10.1016/j.earscirev.2025.105225), presents a noteworthy contribution to the field. It not only summarizes recent advances in estimating landslide runout distances but also introduces new empirical relationships based on a recently compiled dataset. Landslide runout distance is strongly influenced by spatial confinement conditions (landslide topography) during movement and accumulation. However, as the authors themselves note, the current empirical relationships does not account for landslide topography at all. Moreover, the existing dataset has certain limitations that many landslide types are not taken into consideration. In this comment, I aim to offer some constructive input regarding landslide topography and compiled landslide dataset, which may help address some of these gaps.