Seven years after its last edition, the Bordeaux Marathon has returned with a new course, new organisers and a substantially more competitive field. Sub-3 examines the revival of one of France's major city marathons and how its reinvention could reshape its reputation among faster runners.

Seven years after its last edition, the Bordeaux Marathon has returned with a new course, new organisers and a substantially more competitive field. Sub-3 examines the revival of one of France's major city marathons and how its reinvention could reshape its reputation among faster runners.