The notebook

Training notes from the coach.

The thinking behind the plans, the science I lean on, and the patterns I watch for. No fluff, no listicles, just the way I actually coach.

A marathon finisher in her bib and medal laughs as two friends help her down a flight of stairs.
Recovery · 8 min read

Marathon recovery: what the four weeks after 26.2 should look like.

Marathon recovery takes about four weeks. The day-by-day post marathon recovery plan, what to do about wrecked feet, and when to train and race again.

Coach Johnny Crain
Coach Johnny Crain
October 13, 2026
A runner standing at the end of a driveway in running clothes glancing at a watch before a comeback run.Recovery

Return to running program: a coach's six-week protocol

A return to running program for runners coming back from injury or layoff. The six-week protocol I use, what to run first, and when to add workouts safely.

Johnny Crain8 min
Cover image for 20 week marathon training plan: the structure I use with real athletesMarathon

20 week marathon training plan: the structure I use with real athletes

A 20 week marathon training plan from a 2:12 marathoner. The phase-by-phase structure, weekly mileage, key workouts, and the mistakes that waste a long build.

Johnny Crain11 min
A pacer's 2:00 sign held above a crowd of half marathon runners on a gray morning.Pacing

Sub-2 hour half marathon pace: the splits and the block behind them

Sub 2 hour half marathon pace is 9:09 per mile, or 5:41 per km. Why to aim for 9:05, the splits, and the 10-week block that gets you under 2:00.

Johnny Crain7 min
Cover image for Knee drive in running: what it does and how to train itStrength

Knee drive in running: what it does and how to train it

Knee drive in running is the active swing of your leg from behind to in front of your hips. What it does and the four exercises I give athletes.

Johnny Crain8 min
Cover image for Sub-3 marathon pace: what 6:52 per mile actually asks of youPacing

Sub-3 marathon pace: what 6:52 per mile actually asks of you

Sub-3 marathon pace is 6:52 per mile, or 4:16 per km. The splits, the training block behind them, and the race-day plan that holds it to mile 26.

Johnny Crain7 min
Cover image for 20 minute 5K pace: the splits and the training to hold it5K & 10K

20 minute 5K pace: the splits and the training to hold it

20 minute 5k pace is 6:26 per mile, or 4:00 per kilometer. The exact splits, the fitness it takes, and the eight-week block that gets you under 20.

Johnny Crain8 min
A lone runner accelerating on an empty two-lane asphalt road at the end of a long run, arms driving under overcast light.Pacing

What is a progression run? A coach's guide to the workout that trains pace control

What is a progression run? A run that starts easy and finishes fast, in three formats. The purpose, the paces, and how I use them with runners.

Johnny Crain7 min
Cover image for 10 mile training plan: the 8-week build a coach would give youMarathon

10 mile training plan: the 8-week build a coach would give you

A 10 mile training plan for the race that gets treated like a longer 10K or a shorter half. Eight weeks of honest mileage, the workouts, and race pacing.

Johnny Crain8 min
Cover image for 3:30 marathon pace: what 8:00 per mile takes to holdPacing

3:30 marathon pace: what 8:00 per mile takes to hold

3:30 marathon pace is 8:00 per mile. The training block that earns it, the fueling that keeps it honest, and how the splits should read.

Johnny Crain7 min
Cover image for 5K interval workouts: a coach's guide to running a faster 5K5K & 10K

5K interval workouts: a coach's guide to running a faster 5K

The three 5K interval workouts I give my athletes: VO2max reps, threshold cruise intervals, and cutdowns. Paces, rep counts, and where they fit in a week.

Johnny Crain8 min
Everyday runners bunched at a weekend 5K start line, seen from behind on an overcast morning.5K & 10K

5K training plan: the plan an actual coach would write for you

A coach's 5K training plan: honest mileage, the sessions that earn speed, and the recovery rules that turn a generic grid into a PR.

Johnny Crain9 min
Cover image for IT band syndrome in runners: what actually heals itRecovery

IT band syndrome in runners: what actually heals it

IT band syndrome is the most misdiagnosed running injury. A coach's protocol for the real cause and the four-phase return to mileage.

Johnny Crain10 min
Cover image for What to eat before a half marathon: a coach's pre-race planMarathon

What to eat before a half marathon: a coach's pre-race plan

What to eat before a half marathon? A carb-forward meal 2 to 3 hours out, then 20 grams of quick carbs at the gun. The full pre-race plan.

Johnny Crain8 min
Runners in a mid-size road 10K spread across a tree-lined avenue in early morning light.5K & 10K

How many miles is a 10K race? The number and the plan

A 10K is 6.2 miles. Here's what those 6.2 miles ask of you, realistic finish times by fitness level, and the simplest way to train for one.

Johnny Crain7 min
Cover image for Min/mile to min/km: how to convert running pace both waysPacing

Min/mile to min/km: how to convert running pace both ways

Min mile to min km: convert running pace both ways with the exact math, a printable chart, and the two rules that stop you losing seconds every mile.

Johnny Crain6 min
Cover image for Best supplements for runners: what helps and what to skipRecovery

Best supplements for runners: what helps and what to skip

The best supplements for runners, ranked by what actually moves training. Iron, vitamin D, protein, creatine, and the ones that only cost you money.

Johnny Crain7 min
Cover image for How much does a running coach cost? The honest numbersCoach Johnny's notebook

How much does a running coach cost? The honest numbers

How much does a running coach cost? Online 1-on-1 runs $100 to $300 a month, in person more. Every tier priced honestly, and where my $159 and $199 sit.

Johnny Crain7 min
Cover image for How many laps is a mile on a track? A coach's honest answerPacing

How many laps is a mile on a track? A coach's honest answer

How many laps is a mile? Four laps on a standard 400m outdoor track, plus about 30 more feet. What that gap means for track workouts, splits, and pace.

Johnny Crain7 min
A mid-pack pack of everyday 10K runners crossing a 5-kilometer timing mat, seen from the curb on a gray morning.5K & 10K

10km pace chart: what each split actually asks of you

10km pace chart from 32:00 to 70:00, per mile and per km, plus the middle kilometers that decide whether the row you picked is really yours.

Johnny Crain8 min
Cover image for How long is a marathon? 26.2 miles, and what that distance means for how you trainMarathon

How long is a marathon? 26.2 miles, and what that distance means for how you train

How long is a marathon? 26.2 miles, or 42.195 km. Why the distance is that exact number, and what those miles demand in training, fueling, and pacing.

Johnny Crain8 min
Overhead view of switchback singletrack on a hillside, a runner small mid-switchback.Marathon

50k training plan: a coach's real protocol for your first ultra

A coach's 50k training plan for your first ultra. The base, weekly mileage, back-to-back long runs, and the fueling and pacing that get you to the finish.

Johnny Crain9 min
Mid-pack marathon runners' legs and shoes mid-stride, shot low from curb level.Pacing

4-hour marathon pace: what to run and how to train for it

4-hour marathon pace is 9:09 per mile or 5:41 per km. The full splits, the training paces behind them, and a race-day plan that holds it to mile 26.

Johnny Crain8 min
Cover image for How many miles is a half marathon? A coach's guide to the 13.1Pacing

How many miles is a half marathon? A coach's guide to the 13.1

How many miles is a half marathon? 13.1. What the distance demands of a body: base mileage, paces, weeks of preparation, and a race-day plan that holds up.

Johnny Crain8 min
Runners in race bibs on a tree-lined country road, mid-pack in a road race.5K & 10K

Running plans for beginners: a free 8-week walk-to-run schedule

Running plans for beginners: my free 8-week schedule from 1-minute run/walk intervals to your first 5K, plus an easy-pace check and 15 minutes of strength.

Johnny Crain8 min
Cover image for Half marathon pace chart: pick a pace you can actually holdPacing

Half marathon pace chart: pick a pace you can actually hold

A 2:12 marathoner's half marathon pace chart with mile, 5K, and 10K splits from 1:20 to 2:30, plus the field test that tells you which pace you can actually hold.

Johnny Crain9 min
Cover image for 50k to miles: how far is a 50k, and how to actually train for oneMarathon

50k to miles: how far is a 50k, and how to actually train for one

A 50k is 31.07 miles. But training for one is not marathon plus five. A 2:12 marathoner's guide to base, long runs, pacing, and fueling your first 50k.

Johnny Crain9 min
Cover image for Marathon pace chart: 3 hour, 4 hour and 5 hour marathon pacePacing

Marathon pace chart: 3 hour, 4 hour and 5 hour marathon pace

A 2:12 marathoner's marathon pace chart. What 3 hour, 4 hour and 5 hour marathon pace takes per mile, with 5K, 10K and half splits for every goal.

Johnny Crain11 min
Cover image for How many miles is 10,000 steps? The math, the myth, and the runner's versionCoach Johnny's notebook

How many miles is 10,000 steps? The math, the myth, and the runner's version

How many miles is 10,000 steps? Around 4 to 5 miles for most adults. A coach explains the math, the myth, and how to use the number as a runner.

Johnny Crain9 min
Cover image for 10K training plan: a coach's 10-week protocol that actually works5K & 10K

10K training plan: a coach's 10-week protocol that actually works

A 2:12 marathoner's 10-week 10K training plan built around the three sessions that matter. Paces, mileage, and the pattern most PDFs miss.

Johnny Crain8 min
Cover image for How long should your long run be? A coach's mathMarathon

How long should your long run be? A coach's math

Your long run should be 20 to 30% of weekly mileage, capped near 22 miles or 3 hours. The coaching math, tuned to your race and training age.

Johnny Crain8 min
Cover image for How to start running: a coach's guide for total beginners5K & 10K

How to start running: a coach's guide for total beginners

How to start running from zero without breaking. The pace, first four weeks, run-walk protocol, and the mistake that ends most beginner streaks.

Johnny Crain9 min
Cover image for Carbohydrate gel for running: a coach's fueling protocolMarathon

Carbohydrate gel for running: a coach's fueling protocol

How to actually use carbohydrate gels for running: how many per hour, when to take the first one, and the gut-training rules most first-timers skip.

Johnny Crain8 min
A quiet neighborhood street at sunrise with a chalked 5K start line, no runners yet visible.5K & 10K

5K pace chart: what each pace actually gets you

5K pace chart with mile and kilometer splits, plus the paces most runners misuse and how to pick the one you can actually hold on race day.

Johnny Crain9 min
A lone runner on an open road under a hazy amber sky, distant hills blurred by wildfire smoke.Heat & summer

Running in bad air quality: a coach's AQI playbook

When AQI spikes, most runners guess. Here's the coach's threshold chart for running in bad air quality, plus when to move the session indoors.

Johnny Crain8 min
Cover image for Running in heat and humidity: how much to slow downHeat & summer

Running in heat and humidity: how much to slow down

Running in heat and humidity costs real time. How much to slow down, why dew point beats humidity, and how to still get the workout done.

Johnny Crain9 min
Cover image for What is a tempo run: the threshold session that decides your race pacePacing

What is a tempo run: the threshold session that decides your race pace

A 2:12 marathoner's honest breakdown of the tempo run: what pace, how long, how often, and the three ways most runners get it wrong.

Johnny Crain9 min
A marathon finish-line arch under a low sun, finisher banners overhead.Marathon

Marathon taper: the three-week protocol most runners get wrong.

Most tapers fail because runners cut the wrong thing. The 3-week protocol: what to drop, what to keep, and when your last hard workout should land.

Johnny Crain8 min
A runner in orange sprinting down a red outdoor track during an interval session.Pacing

How to run faster: a coach's eight-week protocol

Want to run faster? The eight-week protocol a 2:12 marathoner uses with athletes, with the strides, threshold work, and form fixes that actually move pace.

Johnny Crain9 min
A wide field of everyday marathon runners moving down a broad city avenue at sunrise, seen from behind.Marathon

Average marathon time: what the numbers actually mean for your race

The global average marathon time is around 4:30. What that number actually means, why it doesn't set your goal, and how to pick a real target.

Johnny Crain7 min
A runner pausing at the side of a sunlit gravel path, one hand resting lightly above the kneecap.Recovery

Runner's knee: the real cause and the protocol that heals it.

It is not a knee problem, it is a hip and load problem. Why rest alone fails, and the four-phase protocol that actually heals it.

Johnny Crain10 min
A runner walking on a treadmill beside tall windows in a dim modern gym.Pacing

Treadmill pace chart: MPH and KPH conversions for every running speed.

Convert MPH and KPH to real running paces, plus the 1% incline rule and how to actually train indoors.

Johnny Crain10 min
Runners crossing the start line of the Cherry Creek Sneak 5K in Denver on a rainy race day.5K & 10K

How many miles is a 5K? And how to actually train for one.

3.1 miles is the easy answer. The harder one is how to pace and build for it without blowing up at the line.

Johnny Crain7 min
A solo runner mid-stride at sunrise on an empty country road, breath visible in cold air.Marathon

How to run a marathon: the complete coach's guide.

From your first long run to the start corral, the full arc of building toward 26.2 without breaking down along the way.

Johnny Crain10 min
An elite marathon pack mid-race, the leaders tightly grouped.Marathon

The science-backed marathon training guide: engineering your fastest 26.2.

The physiology that actually moves the needle, and how to structure a block around it instead of guessing.

Johnny Crain5 min
The Boston Marathon finish line on Boylston Street on race day.Marathon

How to qualify for Boston: a masterclass in personalized training.

A BQ is a precision project, not a volume contest. Here is how a coach builds the plan that gets you there.

Johnny Crain6 min
An exhausted runner checking watch splits with their head bowed.Recovery

How to avoid running burnout using recovery data.

The early signs of overreaching show up in your data before they show up in your legs. Here is what to watch.

Johnny Crain6 min
A runner on a forested trail at an easy, conversational pace.Easy runs

Is your easy run pace too fast? The science of slowing down to speed up.

Most runners run easy days too hard and hard days too easy. The fix is simpler, and slower, than you think.

Johnny Crain7 min
A runner mid-deadlift in a home gym, focused on form.Strength

Strength training for runners: what actually carries over.

Not every lift makes you faster. Here are the movements that build durable, resilient running, and the ones to skip.

Johnny Crain6 min
A solo runner on shimmering desert asphalt under a brutal summer sun.Heat & summer

The physiology of summer running: why heat is the poor man's altitude.

Train smart through the heat and you bank adaptations that pay off all fall. Push too hard and you cook your season.

Johnny Crain7 min
A GPS running watch resting on a notebook with handwritten pace zones.Pacing

What is VDOT in running? And how a coach actually uses it.

VDOT turns a race result into training paces. The number is easy; knowing when to trust it is the coaching.

Johnny Crain8 min

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