The most important information about the London Marathon route is that by and large it’s flat. It’s a great route for PB seekers and you can tailor your marathon training around a flat race without the fear of a climb or two knocking you off your rhythm on the day.
It’s important to note that your London Marathon start point will determine your route, because runners are split up for the first few miles to avoid too much congestion in the early stages of the race.
