2026 Chiba Aqua-Line Marathon - Nov 8

Out-and-back road marathon over an expressway bridge marathon course in Kisarazu with 280m elevation gain. A genuinely tough rolling course: surface roads through Kisarazu lead onto the Tokyo Bay Aqua-Line, where you climb the Aqua Bridge to roughly 40 m above the sea toward the Umihotaru turnaround, with the hardest pulls clustered late around 34, 37 and 40 km