Mapping of resting-state networks has been performed in numerous studies to investigate overall brain function and its underlying connectivity. However, attempts to acquire resting-state fMRI data with high spatial resolution have been hampered by the current technical limitations. The spatial resolution from recent submillimetre-resolution fMRI studies still remains around 0.7 × 0.7 × 0.7 mm3, with only partial brain coverage. This work employs a novel high-resolution fMRI method, TR-external EPIK, to perform resting-state fMRI with half-millimetre in-plane resolution and whole-brain coverage at 7T. Various resting-state networks over the whole-brain have been identified with high mapping fidelity onto the cortical ribbon.