We constructed 5D structure-property models for GB energy (i.e. GB energy landscapes), with quantified uncertainty, for the Ni and Fe datasets previously mentioned using the GPR method of interp5DOF (). The performance and fidelity of these models were discussed in previous work . Here we use these models to explore geodesic paths through the resulting GB energy landscapes, between certain low-Σ GBs, and discuss the implications for microstructure evolution.