Your runners
Red route — Blackheath west
Blue route — Blackheath centre
Green route — Blackheath east
All three routes start in Blackheath and merge onto one course within the first mile. Early checkpoint times may differ by a minute or two depending on starting pen position. The colour is on the runner's confirmation email and race bib.
Checkpoint timetable
Distances are approximate. Check the official London Marathon site for confirmed checkpoint locations.