TCS London Marathon takes place on Sat, Apr 24, 2027 in London, United Kingdom. The main route is 42.2 km.
- Date
- Sat, Apr 24, 2027
- Start
- London 🇬🇧
- Distance
- 42.2 km
- Climbing
- 75 m
- Level
- Open to all
Your 29-week plan to TCS London Marathon
The Base phase starts this week. Built around your fitness and adjusted every day as your form changes; attach the course and it prepares for the climbs too.
Build my planFree to start · No credit card
The TCS London Marathon features a fast and flat road course stretching from Greenwich to Westminster.
What this race demands
The TCS London Marathon demands disciplined pacing over a standard road distance on a flat profile. Athletes must sustain continuous running effort through urban terrain.
Pacing Consistency
The flat road course allows for an even distribution of effort. Maintaining a strict target pace without major surges prevents early muscle fatigue.
Impact Durability
Covering 42.2 kilometers on pavement requires high structural resilience in the lower limbs to handle repeated ground reaction forces.
A target intake of 60 to 90 grams of carbohydrates per hour should be maintained throughout the duration to support continuous running.
What would it take you?
Pick the level closest to yours for an estimate of finish time on this course and the training a solid preparation needs.
Estimated finish
3:45–4:35
Peak-week training
5–7 h/week
A model estimate from distance, climbing and level, not a promise. Conditions, drafting and pacing move it.
IntervalCoach turns those weekly hours into a concrete plan built around your actual fitness. Start with this race as your goal
Your road to race day
Race day at TCS London Marathon is 29 weeks away. This is how a coach divides that time. The first phase starts now.
01Base17 weeks · Oct 4, 2026 – Jan 30, 2027
Aerobic foundation: mostly steady endurance work that grows the aerobic engine and the durability the later phases stand on.
02Build6 weeks · Jan 31, 2027 – Mar 13, 2027
Progressive overload: training load climbs in waves, with harder weeks stacked on the base and planned recovery weeks that let the gains land.
03Peak3 weeks · Mar 14, 2027 – Apr 3, 2027
The hardest weeks of the plan: race-specific intensity at nearly full training load, sharpening exactly what this race asks for.
04Taper2 weeks · Apr 4, 2027 – Apr 17, 2027
Volume drops while intensity stays: short, sharp efforts keep the legs awake as fatigue drains away.
05Race week1 week · Apr 18, 2027 – Apr 24, 2027
Openers, rest and logistics. The work is done; the job now is arriving fresh.
Frequently asked questions
When is TCS London Marathon?
TCS London Marathon takes place on Sat, Apr 24, 2027 in London, United Kingdom.
How long is TCS London Marathon?
The main route is 42.2 km.
What does TCS London Marathon demand?
The TCS London Marathon demands disciplined pacing over a standard road distance on a flat profile. Athletes must sustain continuous running effort through urban terrain.
How much climbing does TCS London Marathon have?
TCS London Marathon has 75 m of climbing.
Who is TCS London Marathon for?
TCS London Marathon is open to all participants.
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