Somewhere between “I run a bit” and “I am a marathon runner” lies 16–20 weeks of the most transformative training most people ever do. A marathon is not just a race; it is a project that reorganises your weeks, your weekends and — runners consistently report — your sense of what you are capable of. In Nottingham in 2026, with the Robin Hood Half Marathon as the perfect stepping stone and superb riverside training routes, there has never been a better time or place to go the full 26.2.
Here is the step-by-step plan.
Is It Worth It? (The Honest Answer)
Training for a marathon costs 4–6 months of significant time (peak weeks demand 6–8 hours), real physical discomfort, and roughly £300–£600 all-in (shoes, race entry, nutrition, maybe a club membership). What it buys: cardiovascular fitness at a level few activities match, a relationship with your body built on respect rather than criticism, membership in a wonderfully supportive community, and a finish-line memory that genuinely lasts a lifetime. Runners describe the marathon as the hardest thing they have loved — and the training, not just the race, as the point.
The honest caveats: it is not a weight-loss plan (marathon training makes many people hungrier, not lighter), it demands schedule control that parents of young children sometimes cannot give, and it requires a base — you should be comfortably running 15–20 miles a week before starting a marathon plan. If that base is not there yet, target the Robin Hood Half first; it is a superb race and the perfect audition. Our guide to staying motivated with long-term goals is essential companion reading — marathon training is motivation management as much as running.
The 16-Week Step-by-Step Structure
Weeks 1–4: Build the base. Four runs a week: three easy runs (conversational pace — you should be able to chat) plus one long run, growing from 8 to 12 miles. Total: 20–30 miles/week. This phase feels easy; that is the point — aerobic base is built slowly. Weeks 5–8: Add quality. Keep the long run growing (to 16 miles), add one session of faster running weekly (tempo or intervals), total 30–40 miles/week. Weeks 9–12: Peak. The long run reaches 18–20 miles (never run the full 26.2 in training — the recovery cost exceeds the benefit), weekly totals 40–50 miles. This is the hardest phase; protect sleep fiercely. Weeks 13–16: Taper. Gradually reduce volume while keeping some sharpness — the taper feels awful (phantom pains, convinced you have lost fitness) and works brilliantly. Trust it.
The golden rules throughout: increase weekly mileage by no more than 10%, never increase long-run distance and intensity in the same week, take a cutback week (reduced mileage) every fourth week, and run easy days genuinely easy — most beginners run their easy runs too fast and their hard runs too slow. England Athletics club finder connects you with Nottingham running clubs whose group long runs make the miles social.
Fuelling, Hydration and the Dreaded Wall
“The wall” at mile 20 is glycogen depletion — your body running out of its premium fuel. Prevention is fuelling, and fuelling is practice: before long runs: eat a familiar carb-rich meal 2–3 hours before (our guide to eating before exercise covers the timing). During: take on 30–60g of carbs per hour from mile 6–8 onwards — gels, chews, jelly babies, bananas; whatever your stomach tolerates, tested in training, never new on race day. Hydrate: drink to thirst plus a little; over-drinking is as dangerous as under-drinking. After: protein plus carbs within a couple of hours; then sleep — the ultimate recovery tool (sleep needs rise with training load).
Practise your exact race-day nutrition on long runs — brand, timing, quantity. Race-day stomach issues end more marathons than fitness does, and they are almost always caused by trying something new. The NHS exercise guidance covers the health fundamentals underpinning all of this.
The Mental Game (It’s Half the Race)
Everyone trains the legs; few train the head, and the head is what gets you through miles 20–26. Build mental strategies in training: break the race into chunks (many runners count down the last 10k as “just a parkrun twice”), have a mantra for hard moments (“relentless forward progress” is a classic for a reason), and practise running tired — the last miles of long runs are dress rehearsals for race day. Expect a bad patch; every marathoner gets one, and they pass. Walk breaks are not failure — run-walk strategies get thousands of first-timers to the finish happy. The Nottingham crowds, especially around the finish at Victoria Embankment, will carry you further than you think possible.
Gear, Niggles and Nottingham Routes
Shoes: the one essential purchase — get fitted at a proper running shop (Nottingham has excellent ones), replace every 400–500 miles, and never race in new shoes. The rest: moisture-wicking kit, a running belt or vest for long runs, anti-chafe balm (non-negotiable past 15 miles), and a GPS watch if you love data (your phone works fine to start). Niggles: distinguish soreness (fine) from pain that alters your gait (stop and assess); most beginner marathon injuries come from too much, too soon — the 10% rule exists because violating it injures people. See a physio early rather than hoping it resolves.
Nottingham training routes: the Victoria Embankment and riverside paths offer flat, scenic miles; Wollaton Park’s trails build strength; the Robin Hood Half course itself is perfect race-practice terrain. Joining a club transforms the long runs from solitary slogs to social highlights. And when the big day approaches, the London Marathon’s official training resources — applicable to any marathon — are among the best free plans available.
Conclusion
Training for your first marathon step by step in Nottingham is absolutely worth it if you have the base (15–20 miles/week) and the schedule: 16 weeks of progressive training — base, quality, peak, taper — with the 10% rule, practised fuelling, proper shoes and Nottingham’s riverside miles carrying you to the start line. It will be the hardest thing you have loved, and the finish will rewire what you believe you are capable of. Lace up, start the base building, and we will see you at mile 26.
Frequently Asked Questions
How long does it take to train for a first marathon?
16–20 weeks from a base of 15–20 comfortable miles per week. Beginners should build that base first (8–12 weeks of easy running) before starting a marathon-specific plan — rushing the base is the top cause of injury.
How many miles a week do marathon beginners run?
Peak weeks reach 40–50 miles over 4–5 runs, but most of the plan sits at 25–40. The long run (up to 20 miles) matters more than total volume; never run the full 26.2 in training.
What should I eat during a marathon?
30–60g of carbs per hour from early in the race — gels, chews, jelly babies or bananas, whatever your stomach tolerates. Practise your exact race-day nutrition on long training runs; never try anything new on race day.
What is “the wall” in a marathon?
Glycogen depletion around mile 20 — your body running out of premium fuel, causing sudden heavy fatigue. It’s largely preventable with proper in-race fuelling (carbs from early on) and sensible pacing.
