Runners spread across a city avenue during a marathon

TCS London Marathon (The Double)

The course is flat, urban and fast, and the depth of crowd support along it remains the race's defining feature.

Prepare for TCS London Marathon

A plan built from your answers and your race date.

marathon training plan

195km through the streets of London. The course is flat, urban and fast, and the depth of crowd support along it remains the race's defining feature. It sits among the biggest marathons on the international calendar.

The race is part of the Abbott World Marathon Majors series. Splitting the field across two days reshapes the weekend, since accommodation, number collection and your actual race day all depend on the day you are allocated.

The formats

One format only.

Format	Distance
Marathon	26.2 mi

Organizer information, checked on September 21, 2026 · londonmarathonevents.co.uk

When to start

A build for this distance usually runs 12 to 20 weeks. Counted back from race day, that puts the start somewhere between November 30, 2026 and January 25, 2027.

These ranges are working conventions, not a research finding — no trial has compared plan lengths against each other. What matters more is that the plan was built for the weeks you actually have, rather than shrunk down from a longer one.

How to choose your start date

When to start

November 30, 2026

→ January 25, 2027

Worth reading before you enter

Races and distances 10K, half, marathon: what each one really asks They are all running. They are not the same event. What limits you, how long you need, and how the race falls apart — all three change with the distance. Read Races and distances The big marathons: what each one actually demands A marathon is 42.195 km everywhere. What changes is the profile, the crowd, the weather you are likely to get — and so what your training should emphasise. Read Training Eating and drinking: what’s proven, what isn’t This is where confident advice most often runs ahead of the evidence. Some of it is well tested. Some is opinion wearing a number. And one common habit can kill you. Read

Questions

What is the date of TCS London Marathon (The Double) in 2027?

TCS London Marathon (The Double) is run on Saturday, April 24, 2027 in London. Date published by the organizer, checked on September 21, 2026.

How do I enter the TCS London Marathon 2027?

uk, where the organiser sets out the available entry routes and the timeline. With the format changing, watch their updates on how race days are allocated.

Other races

This list keeps growing; it draws no line. A race that is missing is prepared for in exactly the same way.

Chester · United KingdomMarathon MBNA Chester Marathon March The MBNA Chester Marathon is a road race held in Chester, Cheshire, in north-west England. 2 km marathon, Brighton and Hove · United KingdomMarathon Brighton Marathon Weekend Apr 3 195 km marathon, a 10K and the Brighton Miles in Brighton and Hove, on the south coast of England. Manchester · United KingdomMarathon Manchester Marathon Apr 18 The Manchester Marathon is run on the roads of Greater Manchester, through the urban and suburban landsca Your race is not here? Tell us about your race You can prepare for it all the same. Any race, anywhere, and even a goal without a race.

Your race is on the calendar. Your plan should be too.

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