Sub-3 (sub-three), which runs 42.195km in less than 3 hours, is said to be a longing area for general runners running in full marathons. Kochi Prefectural Office staff Toby (39 years old) challenges this big wall! Based on data obtained from physical strength measurement, approximately 100 … Continue reading Sub-3 that prefectural government officials really aim for! Can a full marathon run in 3 hours? The preface