Last updated: September 2026

Full recovery from a marathon takes 2 to 3 weeks, not 2 to 3 days. Serum creatine kinase, the standard blood marker of muscle damage, peaks around 24 hours post-race at roughly 15 times baseline and takes about a week to return to normal. Your legs will feel acceptable by day 4. Your muscle tissue will not be repaired until well after that.

This is a day-by-day protocol for the fortnight after a road marathon, built for runners who want to return to training without picking up a calf or Achilles problem in week two. Every recommendation is tied to what the evidence supports, including the parts where it is weaker than the marketing suggests.

How long does it actually take to recover from a marathon?

Physiological recovery runs on three separate clocks. Glycogen refills in 24 to 48 hours with adequate carbohydrate. Perceived soreness resolves in 3 to 5 days. Structural muscle repair and immune function take 7 to 14 days, and full return to marathon-specific training typically takes 4 to 6 weeks.

The creatine kinase data makes the point cleanly. In marathon runners, serum creatine kinase rises roughly 15-fold and peaks at 24 hours before returning to baseline after about a week. Faster finishers often show higher elevations than slower ones, because they generate more eccentric loading per kilometre. Feeling fine is not the same as being repaired.

The practical consequence: the first easy run should be a decision based on the calendar, not on how your quads feel on day 3. Most coaches place that first jog at day 5 to 7, capped at 20 minutes, with a hard stop if anything is sharp rather than merely stiff.

What should you do in the first 24 hours after a marathon?

The first 24 hours has four jobs: refuel, rehydrate, move gently, and sleep. Nothing else in this window moves the needle much.

Refuel within the first four hours

Sports nutrition position stands recommend 1.0 to 1.2 g of carbohydrate per kg of body mass per hour for the first 4 hours post-exercise, then a return to a normal diet reflecting daily fuel needs. For a 70 kg runner that is roughly 70 to 84 g of carbohydrate per hour, which is a substantial amount of food and a common failure point when appetite is suppressed.

Adding protein to carbohydrate does not further improve glycogen resynthesis when carbohydrate intake is already above 1.0 g/kg/h. It does help when intake is sub-optimal, at or below 0.8 g/kg/h, which describes most runners in the hours after a race. Target around 0.5 g/kg of protein at your first proper meal.

Walk, do not stretch aggressively

Ten to fifteen minutes of easy walking after crossing the line supports circulation and helps you transition out of race state. Deep static stretching into damaged eccentric-loaded muscle offers no recovery benefit and adds mechanical stress to tissue that is already compromised.

What is the day-by-day marathon recovery protocol?

This is a template, not a prescription. Runners over 45, first-time marathoners, and anyone who ran significantly slower than target in the closing 10 km should shift the whole schedule 2 to 3 days later.

Does cold water immersion help after a marathon?

Yes for soreness and perceived recovery, and the adaptation-blunting concern that applies to strength training does not apply here. A 2025 network meta-analysis found medium-duration immersion at 11-15°C significantly reduced delayed onset muscle soreness and improved markers of muscle function such as jump performance.

The usual objection to cold water immersion is that it suppresses the inflammatory signalling driving training adaptation. That objection is real in a hypertrophy block. It is close to irrelevant in the 72 hours after a marathon, because you are not chasing adaptation from the race. You are trying to get a damaged athlete walking down stairs normally.

The protocol worth using: 11-15°C for 10-15 minutes, immersion to the waist or higher, within 4 hours of finishing. Colder is not better. Below 10°C the discomfort rises sharply without a proportional recovery benefit, and adherence falls off a cliff.

Be honest about the evidence quality, though. A 2025 randomised controlled trial found no acceleration of recovery from exercise-induced muscle damage after cold or hot water immersion in women, and the wider literature remains inconsistent because protocols vary so widely. The soreness effect is well supported. The tissue-repair effect is not.

Do compression boots help after a marathon?

Intermittent pneumatic compression reliably reduces perceived soreness and improves how your legs feel, but the evidence that it accelerates underlying muscle repair is weak. A systematic review and meta-analysis found overall moderate decreases in creatine kinase and small decreases in interleukin-6 and C-reactive protein, while a study specifically in long-distance runners found no significant difference in subjective pain ratings versus control.

That is a more measured claim than most compression marketing makes, and it is the right one. What compression does well in marathon recovery week is give you a repeatable, passive 20 to 30 minute block that keeps you off your feet, elevates the legs and moves fluid. The perceived-recovery effect is real, and it is worth something when you are trying to stop yourself running too soon.

Where they genuinely earn their place: days 2 to 10, once daily, 20 to 30 minutes at a moderate pressure. Higher pressure is not better for a runner with acute muscle damage. Pulse PRO (£499) runs 6 chambers to 260 mmHg and is cordless with a 3 hour battery, which matters more than it sounds when the alternative is sitting next to a plug socket every evening for a week.

Ranked by evidence strength for marathon recovery week

What do most runners get wrong in marathon recovery week?

Three errors account for most post-marathon injuries reported by coaches and physios: running too early because soreness resolved, jumping straight back to structured sessions in week two, and treating recovery kit as a substitute for reduced load rather than an addition to it.

The third one is the important one. No compression protocol, cold plunge or massage gun buys you the right to run a tempo session on day 6. Recovery modalities work at the margin. Load management is the main effect, and everything else is a rounding error next to it.

The fourth error is subtler: the post-marathon blues. Weeks of structure disappear overnight, and the temptation is to fill that gap with training. Filling it with sleep, food and a genuinely boring fortnight is the higher-performance choice.

How should coaches handle a squad after an endurance event?

For a running club or endurance squad the constraint is throughput. Twenty athletes finishing on the same day cannot all get individual physio attention, so the practical answer is a shared kit rota: one or two compression units and a plunge tub covering the whole group across the week on a booking sheet.

That model works because the highest-value windows are staggered. Cold water immersion matters in the first 24 hours. Compression matters most from day 2 to day 10. A single Plunge PRO on race day plus two Pulse PRO units across the following fortnight covers a squad of twenty without anyone waiting.

Clubs, academies and coaching businesses buying multiple units should look at the MyVYRO partner programme, which covers multi-unit pricing and setup guidance for shared recovery spaces. If you are costing out a dedicated space, our recovery room setup guide has the numbers.

Frequently asked questions

Written by Jonny Weekes, MyVYRO. Sources: a 2025 network meta-analysis of cold water immersion dose; a 2025 randomised controlled trial on water immersion and exercise-induced muscle damage in women; sports nutrition position stands on post-exercise carbohydrate and protein intake; and published meta-analytic data on lower-limb intermittent pneumatic compression. We supply the Pulse PRO and Plunge PRO to clubs, gyms, clinics and performance staff across the UK. British English throughout. For general education, not medical advice.