stjames st james park, st james park, ape 2.5 km route. —— stjames park, a 2.5 km route.n marathon route sprawls across the city, from greenwich park — where they set off — through the docklands and into the city. but this elite—only race will happen in stjames‘s park. they'll follow the 2.5km route round, which does take in and finish on the mall. that's a distance they'll have to loop 16 times to reach the full distance. there'll be just 30 to a0 runners in each of the men and women's races, as well as smaller fields in two wheelchair races. that's compared to the 42,000 who ran last year's marathon. there'll be no spectators on the st james‘s park course — and significantly, too, the 2021 london marathon‘s been pushed back to october, in the hope that increases the chances of getting the big numbers back next year. the decision has been made that the journey, that amazing journey, from greenwich to the mall, where yare supported by three quarters of a million people, is not appropriate to happen this year. the marathon is notjust the to happen this year. the marathon i