The sprint to make more of marathons; Turkey rejoins F1's crowded calendar

After a record-shattering London Marathon, James Emmett and David Cushnan take a look at the ways in which marathons are being packaged and commercialised - and why, after 1.1 million applications this year in London, there's such a thirst for participating. They examine plans for next year's London Marathon to become a two-day, two-marathon affair; London Marathon Events' recent acquisition of the Frankfurt Marathon; and World Athletics' recent decision to create a standalone marathon world championships. Elsewhere, as Turkey rejoins the F1 grid, after signing a five-year agreement for a Grand Prix, there's a look at the changing shape of the F1 calendar, and the creative ways the sport is handling demand to host races whilst keeping to a 24-race per season calendar.