London Marathon Running Plan: The Complete Guide for First and Second-Time Runners

The London Marathon is one of the most iconic road races in the world. Whether you are about to run it for the first time or going back to chase a better result, the training approach matters more than almost anything else.

With race day just seven weeks away, this guide covers everything you need: how to structure your remaining training, what a proper London Marathon running plan actually looks like at different levels, how to pace the course, and what race day logistics mean for your performance.

If you are earlier in your training cycle and reading this as a reference for next year, the principles here apply across any build. The timelines will just shift.

What Makes London Marathon Training Different

London is a fast course. The first half is slightly downhill net, the crowds are relentless in a good way, and the conditions in late April are usually cool enough to run well. All of this makes it a great PB course, but it also means it is easy to go out too hard.

A good London Marathon running plan accounts for this. You train for the effort you can sustain for 26.2 miles, not the effort the crowd will try to drag you to in the first 10 kilometres.

It is also a logistical event. You are dealing with mass start corrals, bag drop, travel into the city, and the psychological weight of 50,000 runners around you. Your training plan should include race rehearsals, not just mileage.

Where You Should Be 7 Weeks Out

Seven weeks is a meaningful window. You still have time to make real fitness gains, consolidate your long run base, and dial in your race-day systems. You do not have time to suddenly add 20 miles per week without breaking down.

Here is a realistic picture of where first and second-time runners typically are at this stage, and what each needs.

First-Time Marathon Runners

If this is your debut, your priority is arriving at the start line healthy, confident, and having completed at least two runs of 18 to 20 miles. You do not need to have run 26 miles in training. The race itself, the crowd, and the adrenaline will carry you through those final miles if you have built the base.

At seven weeks out, you should be running 4 to 5 days a week, with a long run between 16 and 20 miles depending on where you are in your build. If your long run is still sitting at 14 miles, you need to prioritise getting two more 18-plus-mile efforts in before your taper starts in week 14 or 15.

Focus areas for the next four weeks:

• Lock in your long run progression (aim for a peak of 20 to 22 miles around week 11 or 12)
• Practise your race-day nutrition on every long run
• Do at least one marathon-pace segment during a long run to understand what that effort feels like when you are fatigued
• Sort your kit, shoes, and gear so there are no surprises

Second-Time Marathon Runners

If you have done this before, you are chasing something. Maybe a sub-4, a sub-3:30, or just a better experience than last time. The challenge at seven weeks out is staying honest about the shape you are actually in versus the shape you hoped to be in by now.

The biggest mistake returning runners make is skipping the process because it feels familiar. Your body still needs the work. The course does not care that you have done this before.

Focus areas for the next four weeks:

• Add quality into your long runs, not just time on feet (include marathon-pace miles in the back half)
• Use midweek tempo runs to sharpen your threshold
• Review what went wrong last time and train specifically for it
• Start thinking about your pacing strategy now, not on race morning

A 16-Week London Marathon Running Plan: How It Works

Most structured marathon plans are 16 to 20 weeks. If you followed a programme from the start, you are now in the final third of your build. Here is how a solid 16-week London Marathon running plan is typically structured.

Phase 1: Base Building (Weeks 1 to 6)

The first phase is about building consistent aerobic mileage. Most runs are easy, in the 65 to 75 percent of max heart rate range. The long run builds gradually from around 10 to 14 miles. Strength work, if you do it, sits comfortably here without conflicting with your running load.

The goal is not to tire yourself out. It is to build the engine. Easy miles accumulate aerobic adaptations: increased mitochondrial density, improved fat oxidation, stronger connective tissue.

Phase 2: Marathon-Specific Development (Weeks 7 to 12)

This is the sharpest phase. Long runs extend to 18 to 22 miles. You introduce marathon-pace work: either as dedicated tempo runs or as segments embedded in your long runs. Weekly mileage hits its peak, usually around weeks 10 to 12.

This is also where most runners either build confidence or accumulate damage. The key is progressive loading with recovery built in. A deload week every third or fourth week is not optional -- it is what allows you to actually absorb the training. If you are not sure how to structure that, Edge's adaptive training approach builds this in automatically around your schedule.

Midweek, you are running two or three times including at least one quality session, whether that is intervals, a tempo, or a progressive run.

Phase 3: Taper (Weeks 13 to 16)

The taper is where first-time runners panic and second-time runners forget how important it is. You will feel sluggish. You will feel like you are losing fitness. You are not. You are recovering and allowing your body to store everything the previous 12 weeks built.

Mileage drops by roughly 20 percent each week from week 13. Your long run comes down to 12 to 14 miles in week 14, then 8 to 10 in week 15, then a short 4 to 6 miles in race week. Quality sessions reduce in volume but keep some intensity so you do not feel flat on race day.

Do not run more than you planned because you feel good. Do not skip sessions because you feel tired. Trust the process.

Weekly Training Structure

A typical week in the peak phase of a London Marathon running plan looks like this:

• Monday: Rest or easy cross-training (30 to 40 minutes)
• Tuesday: Quality run -- intervals or tempo, 6 to 10 miles total
• Wednesday: Easy recovery run, 5 to 7 miles
• Thursday: Medium-long run with some marathon-pace miles, 10 to 14 miles
• Friday: Rest or very easy 4 to 5 miles
• Saturday: Easy 6 to 8 miles
• Sunday: Long run, 16 to 22 miles depending on week

Total peak mileage: 45 to 55 miles per week for a runner targeting sub-4:30. Higher for faster targets.

If you are doing strength work alongside your running, the research on concurrent training shows it supports performance when programmed correctly. Two sessions a week, lower body volume reduced as race day approaches, is the standard approach. The Edge running plan is built to handle this balance automatically, adapting your weekly schedule based on what you have actually done.

London Marathon Pacing Strategy

The most common mistake in London is going out too fast. The first mile from Greenwich is slightly downhill, the crowd is deafening, and your legs feel better than they ever have. None of that means you should bank time in the first 10 kilometres.

Miles 1 to 6: Run 10 to 15 seconds per mile slower than marathon pace. It will feel embarrassingly easy. That is correct.

Miles 6 to 18: Settle into marathon pace. This is the long middle section through Canary Wharf, the Isle of Dogs, and back through Tower Hill. Stay controlled.

Miles 18 to 22: This is where races are won or lost. If you have run conservatively, you will start passing people. If you went out too hard, this is where it unravels. Run to effort here, not pace.

Miles 22 to 26.2: The Embankment stretch is long and exposed. The crowds at this point are extraordinary. Use them. Run to the finish.

Pacing Reference

• 3:30 finish: 8:01 per mile / 4:59 per km
• 3:45 finish: 8:35 per mile / 5:20 per km
• 4:00 finish: 9:09 per mile / 5:41 per km
• 4:30 finish: 10:18 per mile / 6:24 per km
• 5:00 finish: 11:27 per mile / 7:07 per km
• 5:30 finish: 12:36 per mile / 7:50 per km

Nutrition and Fuelling

Marathon nutrition is a skill you train, not something you figure out on race day. If you have not been practising your fuelling on long runs, start now.

Take on carbohydrates from mile 6, not mile 18 when you are already depleted. Aim for 60 to 90g of carbohydrate per hour during the race. Gels work for most people; chews, drinks, and real food work for others -- the key is that you have tested what works for you. Drink water at every station, more so if it is warm. Do not try anything new on race day.

There are 23 water stations on the London course. Lucozade Sport is the on-course energy drink. If you plan to use it, train with it. If not, carry your own nutrition.

Race Day Logistics for London Marathon

The London Marathon is a logistical operation before the gun goes off. Getting this right is part of your preparation.

Before race day: Pick up your number at the ExCeL London Expo (usually Thursday and Friday before the race). Lay out all your kit the night before. Eat your normal pre-race meal the evening before: high carb, nothing unfamiliar.

Race morning: Eat your pre-race breakfast 2.5 to 3 hours before your start time. Arrive at your start area (Blue, Green, or Red) with plenty of time. The Greenwich start can be a long walk from the train. Bag drop closes well before the race starts.

On the course: The first mile is congested regardless of your start colour -- do not panic if your first kilometre is slow. The Cutty Sark at mile 6 is a noise highlight. Canary Wharf (miles 12 to 15) can feel mentally tough. The Tower of London at mile 24 means you are close. The finish on The Mall is 385 yards long.

What to Do in the Final 7 Weeks

Weeks 1 to 4 (now until late March): Complete your long run progression, aiming for 20 miles as your peak. Get one or two marathon-pace sessions in. Lock in your nutrition strategy and test it twice more on long runs. Avoid any sudden mileage spikes.

Week 5 (early April): Your last big week. Final long run of 18 to 20 miles. Start reducing intensity slightly.

Weeks 6 to 7 (race week build and taper): Drop mileage significantly. Do one short quality session mid-week to stay sharp. Sort logistics, travel, kit, and nutrition the week before. Race day: trust your training.

Why a Bespoke Plan Works Better Than a Generic One

Generic marathon plans are built around hypothetical runners. They do not know that you work shifts, that you have a niggling calf, that your long run day has to move this week, or that you also do two strength sessions you do not want to drop.

This is where Edge works differently. Rather than handing you a fixed 16-week block and leaving you to figure out the compromises, Edge adapts your plan in real time around your life, your fitness, and your goals. Whether you are a first-time finisher or chasing a specific time goal, the programme adjusts based on what you have actually done.

If you are also doing strength work alongside your marathon prep, the guide to concurrent training for runners covers how to sequence your sessions without one undermining the other. For those thinking beyond London, the best marathon training apps in 2026 breaks down which tools are worth using for ongoing training.

Common London Marathon Training Mistakes to Avoid

The most common spring marathon training mistakes come up repeatedly with London runners specifically.

Running your long runs too fast. Long runs should feel comfortable. If you cannot hold a conversation, you are running too hard.

Skipping the taper. Runners who panic during taper and add extra miles often arrive at the start line tired rather than fresh. The taper is training. Respect it.

Ignoring strength work because mileage feels more important. Two focused strength sessions per week reduces injury risk and supports running economy. The case for strength training for runners is strong regardless of your time goal.

Not practising race-day conditions. Run in your race-day kit at least twice before the event. Wear your race shoes for your final two long runs.

Going out too fast because the crowd is electric. London crowds are extraordinary and will tempt you to run faster than planned in the first five miles. Stick to your splits regardless of how good you feel.

Frequently Asked Questions

How long is a typical London Marathon training plan?

Most plans run between 16 and 20 weeks. If you are 7 weeks out and feel undertrained, focus on the fundamentals: one long run per week, one quality session, and easy mileage in between.

What is a good time for a first-time London Marathon runner?

Any finish is a good finish for a first-timer. Realistically, most first-time marathon runners complete London in 4 to 5:30 hours. Sub-4 is a strong first marathon. The most important goal is running the race you trained for.

How many miles per week should I be running for London Marathon?

First-time finishers typically peak at 35 to 45 miles per week. Runners targeting sub-4 will usually peak at 45 to 55 miles. Sub-3:30 requires consistent weeks of 55 miles or more.

Should I do strength training during marathon training?

Yes. Two well-programmed strength sessions per week reduces injury risk and supports running economy. Strength training during marathon training is one of the most underused performance tools for distance runners.

What should I eat the night before the London Marathon?

A high-carbohydrate, low-fibre meal you have eaten before. Pasta, rice, or bread with a simple protein source. Avoid anything unusual or likely to cause stomach issues. Eat earlier in the evening to allow digestion.

Can I still improve with just 7 weeks to go?

Yes. Seven weeks is enough time to complete your long run build, add meaningful fitness through quality sessions, and dial in your race-day systems. Be consistent, stay healthy, and trust the process.

What time should I arrive at the London Marathon start?

The start area in Greenwich opens around 7am. Most runners should aim to arrive at least 90 minutes before their wave start time. Bag drop and corral entry both have cut-off times, so check your specific start time on your race number.

Is the London Marathon course fast?

Yes. The London course is considered one of the faster mass-participation marathons. The net downhill profile, typically cool April weather, and dense crowd support make it a strong PB course for first and second-time runners.

Final Thoughts

Seven weeks out is not the time to panic or dramatically change your approach. It is the time to execute with confidence on what you have built.

Stick to your long run schedule. Nail your nutrition practice. Sort your logistics. Run the first half conservatively. The London Marathon is one of the great experiences in sport, and arriving at the finish on The Mall is something you will not forget.

If your current plan is not adapting around you, try Edge free for 7 days and see what a bespoke running plan actually feels like.